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c09

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competency Quiz on c09, created by mrk nthny on 15/08/2016.
mrk nthny
Quiz von mrk nthny, aktualisiert more than 1 year ago
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Erstellt von mrk nthny vor mehr als 8 Jahre
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Zusammenfassung der Ressource

Frage 1

Frage
For proper air temperature control in an air conditioning system using chilled water circulation, which condition should remain constant regardless of load changes ______.
Antworten
  • chilled water system supply temperature
  • compressor discharge temperature
  • squirrel cage fans are used
  • compressor suction pressure

Frage 2

Frage
Before doing any work on a hydraulic system equipped with accumulators, you should_______.
Antworten
  • bleed off all stored energy from the accumulators
  • drain the accumulators and purge with oxygen
  • completely charge the accumulators to prevent system energy loss
  • pump the hydraulic fluid into the accumulators to prevent fluid loss

Frage 3

Frage
The first step when beginning to set the slide valves on a duplex reciprocating pump is to_________.
Antworten
  • center the steam pistons in the cylinders
  • open the relief valve to prevent accidental starting
  • ensure the balance piston is on the downstroke
  • measure the present port openings to ensure reassembly will be the same

Frage 4

Frage
To safely remove the piston rod packing from the steam end of a reciprocating pump, you should_________.
Antworten
  • use a packing hook
  • open the throttle valve and "blow" the old packing out
  • do nothing, as this type of pump utilizes O-rings in lieu of packing
  • open the steam chest and pry the packing loose with a scraper

Frage 5

Frage
In order to properly remove air from the casing of a centrifugal pump when starting, the pump should have a ______.
Antworten
  • vent valve attached to the casing at the top of the volute
  • positive head
  • negative suction head
  • mechanical seal

Frage 6

Frage
When fire safe or fire resistant fluid is to be used in a hydraulic system, it is important that _______.
Antworten
  • the fluid be compatible with all seal materials used
  • separate lube oil supply be furnished for the hydraulic pump
  • the resultant pressure, due to the increase in fluid viscosity, is not excessive
  • the fluid does not dissipate too much heat

Frage 7

Frage
To properly remove packing from a valve stuffing box, you should use a ________.
Antworten
  • packing puller
  • sharpened rod of silver solder
  • chisel and hammer
  • screw driver

Frage 8

Frage
When replacing ball bearings on an electric motor shaft, you should ________.
Antworten
  • apply even force to the inner race
  • tap the outer race with a mallet
  • apply even pressure to the outer race
  • apply pressure evenly to both the inner and outer races

Frage 9

Frage
To remove a hand held right-handed straight cut reamer after it has gone all the way through a hole, you should _____.
Antworten
  • turn the tap wrench clockwise, simultaneously raising the reamer
  • tap the reamer out with a softfaced hammer
  • turn the tap wrench counterclockwise, simultaneously raising the reamer
  • work the reamer side to side to dislodge it

Frage 10

Frage
An acetylene pressure regulator should never be adjusted to maintain pressures exceeding (15psig) 103.4 kPa because_____.
Antworten
  • this gas become extremely unstable under this condition
  • the relief valve will lift
  • the fusible plug will blowout
  • rapid depletion of acetylene is hazardous

Frage 11

Frage
When securing a flash-type evaporator for an extended period of time, you should______.
Antworten
  • completely drain the unit
  • tightly seal the unit to exclude air
  • fill the unit with saltwater
  • fill the unit with descaling compound

Frage 12

Frage
Why should a person performing maintenance on an air compressor wire and tag the system valves closed?
Antworten
  • To protect the operator and the equipment.
  • To prevent escape of air
  • To protect the valves
  • To prevent escape of water

Frage 13

Frage
Which of the following conditions can contribute to accidents?
Antworten
  • Unsafe conditions
  • Good housekeeping
  • Inspections
  • Intelligent work habits

Frage 14

Frage
Fire doors are released by a/an__________.
Antworten
  • method that automatically releases the door in the event of a disruption of control system power
  • hydraulic directional valve that automatically releases the door in the door in the event of a disruption to the control power system
  • spring-loaded catch that automatically lifts to release the door in the event of the presence of a fire
  • pneumatic heat sensor

Frage 15

Frage
Which of the following is an example of biological hazards? I. Exposure to high temperatures, too high levels of relative humidity II. Zoonotic diseases III. Fungal diseases
Antworten
  • II and III
  • I and II
  • I and III
  • I, II and III

Frage 16

Frage
How can ergonomics improve health and safety to the work place? I. reduces the potential for accidents II. reduces the potential for injury and ill health III. improves performance and productivity
Antworten
  • I, II, and III
  • I and II
  • I and III
  • II and III

Frage 17

Frage
Which of the following aspects that ergonomist should consider to assess the fit between person and their work? I. the job being done and the demands on the worker II. the equipment used III. the senses, especially vision, hearing and touch
Antworten
  • I and II
  • I and III
  • II and III
  • I, II and III

Frage 18

Frage
Which of the following is/are the typical ergonomics problems found in the workplace like display screen equipment? I. The screen is poorly positioned - it is too high/low/close/far from the worker, or is offset to one side. II. The mouse is placed too far away and requires stretching to use. III. Chairs are properly adjusted to fit the person, forcing awkward and comfortable postures.
Antworten
  • I and II
  • I and III
  • II and III
  • I, II, and III

Frage 19

Frage
Some of the hazardous of working with electric power tools may be avoided if the operator insures that _________. I. they are properly grounded II. Eye shields and gloves are worn III. Loose clothing and jewelry are not worn
Antworten
  • I, II & III
  • I only
  • I & II
  • II & III

Frage 20

Frage
Some of the hazards associated with air-operated power tools may be avoided if the operator would_________. I. inspect the hoses for cracks and other defects II. Remove jewelry and loose clothing III. Bleed air pressure from the lines before breaking the connections
Antworten
  • I, II & III
  • I only
  • I & II
  • II & III

Frage 21

Frage
Fire prevention during welding or burning aboard any vessel should include_______. I. Posting a fire watch in the immediate area II. Providing an extinguisher which is ready for immediate use III. Requiring the fire watch to remain on post for an adequate cool down period after the completion of welding of burning
Antworten
  • I, II & III
  • I only
  • I & II
  • II & III

Frage 22

Frage
A fire and boat drill on a tank vessel shall, by regulation, include which of the following? I. starting the fire pumps II. Checking fireman's outfits and other personel resuce equipment III. Checking relevant communications equipment
Antworten
  • I, II & III
  • I only
  • I & II
  • II & III

Frage 23

Frage
Regulations require gears, coupling, flywheels, and all rotating machinery capable of injuring personnel to be__________.
Antworten
  • Protected with adequate covers or guards
  • identified by yellow and black warning signs
  • conspicuously identified as to their particular hazard
  • located where they may not be easily contacted

Frage 24

Frage
Why is it that a good housekeeping on a vessel prevents fires?
Antworten
  • It eliminates potential fuel sources
  • It allows better access in an emergency
  • It eliminates trip hazards
  • It improves personnel qualifications

Frage 25

Frage
When working around deck machinery it is a good safety practice to avoid standing in a ‘bright’ of a rope because_________.
Antworten
  • a sudden yank on the line may trap your leg
  • it doesn’t allow for proper faking of the line
  • the coil may become tangled and difficult to manage
  • your work shoes may cause damage to the rope

Frage 26

Frage
To safeguard the operator and other personnel working on or near a hoisting operation, which of the following precautions should be observed?
Antworten
  • Ensure that the lifting gear capacity is not exceeded
  • Keep a load on the hoist until all personnel are finished working
  • Set the load on a movable dolly when transportation may be needed
  • Have one man keep a hand on the load to steady it.

Frage 27

Frage
To prevent oily rags from spontaneously igniting, what should you do?
Antworten
  • Kept in well-ventilated area and discarded as soon as possible
  • Kept in a non-metal container
  • Cleaned thoroughly for reuse
  • kept in paint locker

Frage 28

Frage
The knife edges and gaskets of watertight doors should be _________.
Antworten
  • clean and uncoated
  • lightly coated with tallow
  • coated with petroleum jelly
  • painted to prevent weathering

Frage 29

Frage
Before the seas get rough, it is good safety practice to_________.
Antworten
  • make a visual inspection of all engine spaces and secure loose gear
  • move quickly about the ship
  • increase all engine space lighting
  • shutdown auxiliary equipment

Frage 30

Frage
When a ship is expected to encounter rough seas, it is a good safety practice to ____________.
Antworten
  • check for items which may become adrift and secure loose gear
  • move quickly about the ship
  • make available extra survival gear
  • maintain a negative trim on the vessel

Frage 31

Frage
Which of the following must be eliminated to prevent accidents?
Antworten
  • Unsafe actions
  • Orderliness
  • Frequent inspections
  • Good work habit/practices

Frage 32

Frage
You are replacing a section of heavy piping on deck and using a chain fall to lift the pipe. Which of the following precautions should be taken to prevent personal injury?
Antworten
  • Attach lines to the ends of the pipe and have your helpers steady the load
  • Position several men under the pipe so they can catch it if it falls
  • Place an old mattress under the hoist to prevent the load from hitting the deck.
  • have a first aid kit at the job site

Frage 33

Frage
Which of the listed conditions can be considered as the single greatest cause of accidents?
Antworten
  • Human error
  • Speed
  • Excessive knowledge or skill
  • Excitement

Frage 34

Frage
Safety is dependent on orderliness and cleanliness. Order may be maintained by __________.
Antworten
  • storing items in their assigned place
  • storing all items in a common storage container except those ready-for-sea
  • tagging all items according to their age and then storing them together
  • disposing of used items

Frage 35

Frage
Which of the following actions is required to be carried out during a fire drill on board?
Antworten
  • Each fire pump is to be started.
  • The lifeboat is to be launched and operated
  • An inventory of rescue and fire equipment is to be taken.
  • An inspection and inventory of fire hoses is to be made

Frage 36

Frage
What do all portable electric tools require a ground connection?
Antworten
  • To prevent electric shock if the tool is shortened
  • To prevent burning the motor from an overload
  • To prevent overloading the motor
  • To prevent grounding the plastic case through a short

Frage 37

Frage
Which of the following statements represents the FIRST precaution to be taken prior to working in any installed electrical component?
Antworten
  • Open the supply circuits and tag the switches.
  • Water rubber gloves and boots
  • Use only approved nonconducting tools
  • Groups the case of the machine before beginning any repairs

Frage 38

Frage
Which practices should be followed at all times when using an electric bench grinding machine?
Antworten
  • Wear google, keep support rest clearance properly adjusted to the wheel and replace grinding wheels that are chipped or unbalanced
  • Wear goggles or face shield
  • Replace grinding wheels that are chipped or unbalanced.
  • Keep the support rest clearance properly adjusted to the wheel.

Frage 39

Frage
Which practices should be followed at all times when using an electric grinding machine?
Antworten
  • Each of the above practices
  • Wear goggles or face shield.
  • Be certain that the frame is properly grounded.
  • Be properly trained in the use of this tool

Frage 40

Frage
Approved buoyant work vests may be carried aboard tank vessels and shall be worn by crew members’ ____________.
Antworten
  • under the supervision and control of designated ship's officers
  • when working near or over the water under unfavorable working conditions
  • as substitutes for the approved life preservers during routine drills, weather permitting, when a vessel is moored pierside
  • all of the above

Frage 41

Frage
When should you wear safety glasses aside from when using a hand portable grinder and scraping paint with a hand scraper?
Antworten
  • Using a hammer and a chisel
  • While in port
  • During port state inspection

Frage 42

Frage
Machinery driving fuel oil transfer and fuel oil service pumps must be fitted with a remote means of stopping the machinery. Where is its location?
Antworten
  • Outside the space concerned
  • Within the space concerned
  • The throttle station
  • Within the fireroom

Frage 43

Frage
What is the purpose of injury report?
Antworten
  • Any of the above
  • To give the National Insurance authorities the basis for evaluating whether the personal injury or illness in question can be recognized as an occupational injury or occupational disease
  • To give the public authorities information which may be of help in the evaluation of safety issues and safety measures etc. at the workplace
  • To enable the compilation of injury/accident statistics.

Frage 44

Frage
What is an occupational injury?
Antworten
  • injury is meant bodily injury or illness which is caused by a work accident
  • injury is meant bodily injury or illness which is caused by a leisure accident
  • either A or B
  • Neither A nor B

Frage 45

Frage
Which of the following is an example of biological hazard I. Exposure to high temperatures, too high levels of relative humidity II. Zoonotic diseases III. Fungal diseases
Antworten
  • II and III
  • I and II
  • I and III
  • I, II and III

Frage 46

Frage
Which of the following is an example of biological hazards? I. Exposure to raw vegetable and animal products which may cause allergic reaction II. Risk of poisoning while tasting food ingredients and meals at various stages of cooking III. Risk of communicable diseases transmitted by pests, vermin, rodents, insects
Antworten
  • I, II and III
  • I and II
  • I and III
  • II and III

Frage 47

Frage
Which of the following aspects that ergonomist should consider to assess the fit between person and their work? I. the job being done and the demands on the worker II. the equipment used III. the senses, especially vision, hearing and touch
Antworten
  • I and II
  • I and III
  • II and III
  • I, II and III

Frage 48

Frage
Which of the following aspects that ergonomist should consider the psychological aspect of a person?
Antworten
  • mental abilities
  • fitness and strength
  • the social environment
  • body size and shape

Frage 49

Frage
Which of the following aspects that ergonomist should consider the psychological aspect of a person?
Antworten
  • personality
  • the physical environment
  • the senses, especially vision, hearing and touch
  • the stresses and strains on muscles, joints, nerves

Frage 50

Frage
How can ergonomics improve health and safety to the work place? I. reduces the potential for accidents II. reduces the potential for injury and ill health III. improves performance and productivity"
Antworten
  • I, II, and III
  • I and II
  • I and III
  • II and III

Frage 51

Frage
Which of the following is/are the typical ergonomics problems found in the workplace like display screen equipment? I. The screen is poorly positioned - it is too high/low/close/far from the worker, or is offset to one side. II. The mouse is placed too far away and requires stretching to use. III. Chairs are properly adjusted to fit the person, forcing awkward and comfortable postures.
Antworten
  • I and II
  • I and III
  • II and III
  • I, II, and III

Frage 52

Frage
What is Chapter VIII of STCW Code?
Antworten
  • Standards regarding watch keeping
  • Responsibilities of companies
  • Standards governing the use of simulator
  • Revalidation of certificate

Frage 53

Frage
Which practices should be followed at all times when using an electric bench grinding machine
Antworten
  • All of the above
  • Wear goggles or face shield
  • Replace grinding wheels that are chipped or unbalanced.
  • Keep the support rest clearance properly adjusted to the wheel.

Frage 54

Frage
When a ship is expected to encounter rough seas, it is a good safety practice to ____________.
Antworten
  • check for items which may become adrift and secure loose gear
  • move quickly about the ship
  • make available extra survival gear
  • maintain a negative trim on the vessel

Frage 55

Frage
Safety is dependent on orderliness and cleanliness. Order may be maintained by __________.
Antworten
  • storing items in their assigned place
  • storing all items in a common storage container except those ready-for-sea
  • tagging all items according to their age and then storing them together
  • disposing of used items

Frage 56

Frage
For the protection of personnel, moving parts of rotating machinery are required to be fitted with ___________.
Antworten
  • cover guards
  • audible alarms
  • bright lights
  • reflective tape

Frage 57

Frage
Which practices should be followed at all times when using an electric grinding machine?
Antworten
  • Each of the above practices
  • Wear goggles or face shield.
  • Be certain that the frame is properly grounded.
  • Be properly trained in the use of this tool

Frage 58

Frage
Some of the hazardous of working with electric power tools may be avoided if the operator insures that _________. I. they are properly grounded II. Eye shields and gloves are worn III. Loose clothing and jewelry are not worn
Antworten
  • I, II & III
  • I only
  • I & II
  • II & III

Frage 59

Frage
Some of the hazards associated with air-operated power tools may be avoided if the operator would_________. I. inspect the hoses for cracks and other defects II. Remove jewelry and loose clothing III. Bleed air pressure from the lines before breaking the connections
Antworten
  • I, II & III
  • I only
  • I & II
  • II & III

Frage 60

Frage
All portable electric tools should have a ground connection to prevent_________.
Antworten
  • electric shock if the tool is shortened
  • burning out the motor from an overload
  • overloading the motor from a short
  • grounding the plastic case through a short

Frage 61

Frage
Safety glasses should be worn when_________. I. using a hand portable grinder II. Scraping paint with a hand scraper III. Using a hammer and a chisel
Antworten
  • I, II & III
  • I only
  • I & II
  • II & III

Frage 62

Frage
Before disconnecting a joint in a pipeline, you should__________.
Antworten
  • be sure no pressure exist in the line
  • Determine the size of the gasket
  • hung a bucket under the joint
  • have a first aid kit on hand

Frage 63

Frage
Which of the actions listed and instituted on your part will have the greatest lasting effect on the crew with respect to safety?
Antworten
  • Incorporating safety practices in daily routine
  • Displaying posters illustrating safety practices
  • Showing video tapes of actual accidents
  • Publishing comprehensive safety rules

Frage 64

Frage
All watertight doors and watertight hatches on small passenger vessels of less than 100 gross tons required to be marked in letters __________.
Antworten
  • of at least 1-inch, ‘watertight door-close in an emergency’ or ‘watertight hatch-close in emergency’
  • not to exceed 1-inch, ‘watertight door-close in emergency’ or ‘watertight hatch-close in emergency’
  • of at least 1-inch, ‘emergency exit, keep clear
  • not to exceed 1-inch, ‘emergency exit, keep clear’

Frage 65

Frage
According to the Regulations, all escape hatches and other emergency exits on small passenger vessels of less than 100 gross tons shall be marked on__________.
Antworten
  • both sides, in at least 2-inch letters ‘emergency exit-keep clear’
  • exterior side, in less than 2-inch letters ‘watertight openning-keep clear’
  • exterior side only, in at least 2-inch letters ‘emergency exit-keep clear’
  • both sides, in at least 2-inch letters ‘watertight door-close emergency’

Frage 66

Frage
Regarding battery charging rooms, ventilation should be provided __________.
Antworten
  • at the highest point of the room
  • at the lowest point of the room
  • horizontally near the batteries
  • only when charging is in progress

Frage 67

Frage
Which of the following statements represents the FIRST precaution to be taken prior to working in any installed electrical component?
Antworten
  • Open the supply circuits and tag the switches.
  • Water rubber gloves and boots
  • Use only approved nonconducting tools
  • Groups the case of the machine before beginning any repairs

Frage 68

Frage
Before any work on electrical or electronic equipment is performed, which of the following precautions should be carried out?
Antworten
  • Secure and tag the supply circuit breaker in the open position.
  • De-energized the applicable switchboard bus.
  • Bypass the interlocks
  • Station a man at the circuit supply switch

Frage 69

Frage
Which of the following systems must be arranged so as to be energized by the final emergency power source as required by regulation? I. at least one light in the steering gear room II. Each power operated watertight door system III. Each charging panel for temporary emergency batteries
Antworten
  • I, II & III
  • I only
  • I & II
  • II & III

Frage 70

Frage
Any abnormal condition or emergency occurring in the fireroom must be immediately reported to the _________.
Antworten
  • engineer on watch
  • oiler on watch
  • first assistant engineer
  • Coast Guard

Frage 71

Frage
Any abnormal condition or emergency that occurs in the engine room must be reported immediately to the __________.
Antworten
  • Engineer on watch
  • first assistant engineer
  • fireman on watch
  • Chief engineer

Frage 72

Frage
Before any work is done on a burner in an automatically fired auxiliary boiler, you should always ___________.
Antworten
  • close all manually operated fuel valves
  • block all control valves
  • allow the boiler to cool completely
  • lock all safety interlock switches closed

Frage 73

Frage
Which of the following conditions can contribute to accidents?
Antworten
  • Unsafe conditions
  • Good housekeeping
  • Inspections
  • Intelligent work habits

Frage 74

Frage
Good housekeeping on a vessel prevents fires by __________.
Antworten
  • eliminating potential fuel sources
  • allowing better access in an emergency
  • eliminating trip hazards
  • improving personnel qualifications

Frage 75

Frage
Fire prevention during welding or burning aboard any vessel should include_______. I. Posting a fire watch in the immediate area II. Providing an extinguisher which is ready for immediate use III. Requiring the fire watch to remain on post for an adequate cool down period after the completion of welding of burning
Antworten
  • I, II & III
  • I only
  • I & II
  • II & III

Frage 76

Frage
Fire doors are released by a/an__________.
Antworten
  • method that automatically releases the door in the event of a disruption of control system power
  • hydraulic directional valve that automatically releases the door in the door in the event of a disruption to the control power system
  • spring-loaded catch that automatically lifts to release the door in the event of the presence of a fire
  • pneumatic heat sensor

Frage 77

Frage
Before the seas get rough, it is good safety practice to_________.
Antworten
  • make a visual inspection of all engine spaces and secure loose gear
  • move quickly about the ship
  • increase all engine space lighting
  • shutdown auxiliary equipment

Frage 78

Frage
You are replacing a section of heavy piping on deck and using a chain fall to lift the pipe. Which of the following precautions should be taken to prevent personal injury?
Antworten
  • Attach lines to the ends of the pipe and have your helpers steady the load
  • Position several men under the pipe so they can catch it if it falls
  • Place an old mattress under the hoist to prevent the load from hitting the deck.
  • have a first aid kit at the job site

Frage 79

Frage
What safety precautions should be observed by the crew while working around machinery in an engine room? I. They should wear safety shoes II. They should wear ear protection III. They should not wear jewelry
Antworten
  • I, II & III
  • I only
  • I & II
  • II & III

Frage 80

Frage
TO safeguard the operator and other personnel working on or near a hoisting operation, which of the following precautions should be observed?
Antworten
  • Insure that the lifting gear capacity is not exceeded
  • Keep a load on the hoist until all personnel are finished working
  • Set the load on a movable dolly when transportation may be needed
  • Have one man keep a hand on the load to steady it.

Frage 81

Frage
All exposed and dangerous areas machinery, such as gears and rotating parts, shall be properly protected with__________.
Antworten
  • any of the above
  • covers
  • guards
  • rails

Frage 82

Frage
Regulations require gears, coupling, flywheels, and all rotating machinery capable of injuring personnel to be__________.
Antworten
  • Protected with adequate covers or guards
  • identified by yellow and black warning signs
  • conspicuously identified as to their particular hazard
  • located where they may not be easily contacted

Frage 83

Frage
Which of the listed conditions can be considered as the single greatest cause of accidents?
Antworten
  • Human error
  • Speed
  • Excessive knowledge or skill
  • Excitement

Frage 84

Frage
accidents are considered as an ‘unexpected contract’ you will be able to perform a better job by observing which of the following practices? I. Looking for unsafe practices II. Inspecting for unsafe conditions III. Analyzing jobs for safer methods
Antworten
  • I, II & III
  • I only
  • I & II
  • II & III

Frage 85

Frage
Which of the following must be eliminated to prevent accidents?
Antworten
  • Unsafe actions
  • Orderliness
  • Frequent inspections
  • Good work habit/practices

Frage 86

Frage
When working around deck machinery it is a good safety practice to avoid standing in a ‘bright’ of a rope because_________.
Antworten
  • a sudden yank on the line may trap your leg
  • it doesn’t allow for proper faking of the line
  • the coil may become tangled and difficult to manage
  • your work shoes may cause damage to the rope

Frage 87

Frage
Who is responsible for reporting a casualty for a mobile offshore drilling unit?
Antworten
  • The owner.
  • The pilot.
  • The surveyor
  • The engineer

Frage 88

Frage
Which of the following actions is required to be carried out during a fire drill on board?
Antworten
  • Each fire pump is to be started.
  • The lifeboat is to be launched and operated
  • An inventory of rescue and fire equipment is to be taken.
  • An inspection and inventory of fire hoses is to be made

Frage 89

Frage
Which of the following events shall be conducted during a fire and boat drill?
Antworten
  • All watertight doors which are in use while the vessel is underway shall be operated
  • All lifeboat equipment shall be examine
  • Fire pumps shall be started and all exterior outlets opened
  • All of the above

Frage 90

Frage
A fire and boat drill on a tank vessel shall, by regulation, include which of the following? I. starting the fire pumps II. Checking fireman's outfits and other personel resuce equipment III. Checking relevant communications equipment
Antworten
  • I, II & III
  • I only
  • I & II
  • II & III

Frage 91

Frage
Approved buoyant work vests may be carried aboard tank vessels and shall be worn by crew members’ ____________.
Antworten
  • under the supervision and control of designated ship's officers
  • when working near or over the water under unfavorable working conditions
  • as substitutes for the approved life preservers during routine drills, weather permitting, when a vessel is moored pierside
  • all of the above

Frage 92

Frage
The knife edges and gaskets of watertight doors should be _________.
Antworten
  • clean and uncoated
  • lightly coated with tallow
  • coated with petroleum jelly
  • painted to prevent weathering
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myJurazone
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frau planlos
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Anja Freiler
Geometrie - das Rechteck
Robert Mairginter
PAED
Anna Huber
Vetie Allgemeine Pathologie Altklausur 2015
Tropsi B
Vetie Radiologie Vorlesungsfragen
Sophie Lütkemöller
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