Burns can be caused by ultraviolet light rays.
To treat a third degree burn, apply ointments or antibiotic cream.
Any cold liquid you can drink can be poured on a first or second degree burn.
Too much visible light can cause temporary night blindness.
Both earmuffs and earplugs protect the outer ear from burns.
Damage to your hearing caused by high sound levels is permanent and may not be detected until later in life.
Welding and cutting lead bearing alloys or metals whose surface have been painted with lead based paint can generate lead oxide fumes.
The welding area should be ventilated and forced ventilation is best, but natural ventilation is sometimes required.
Scrap metal and electrode stubs are difficult and costly to recycle.
When using extension cords on portable power tools, the size of the conductors must be small enough to enable a drop in voltage.
To treat a third degree burn ________.
apply ointments or antiseptic spray
remove all clothing stuck to the burn
cover the burn with thick sterile, non fluffy dressing
pour iced water on the burn
________ light is dangerous because the welder cannot feel the light while being exposed to it, and it may pass though clothing.
Ultraviolet
Infrared
Visible
Spectral
_______ Light can cause temporary night blindness.
The symptoms of lead poisoning include ________.
influenza
lung irritation and kidney damage
abdominal cramps and lung irritation
metallic taste, loss of appetite, nausea, abdominal cramps, and insomnia
The symptom of acute exposure to zinc oxide fumes include ________.
loss of appetite
lung irritation
abdominal cramps
insomnia
The symptoms of exposure to zinc oxide fumes include _______.
influenza symptoms
abdominal cramps ad lung irritation
_________ is a gas that is produced by the ultraviolet radiation in the air in the vicinity of welding operations.
Argon
Phosgene
Ozone
Carbon dioxide
Acetylene cylinders that have been lying on their sides must stand upright for at least _____ hours before they are used.
two
three
four
five
_____ fire extinguishers are used for combustible solids.
Type A
Type B
Type C
Type D
______ fire extinguishers are used for combustible metals such as zinc and magnesium.
If a nut or bolt is too tight to loosen with a wrench, _______.
use a cheater bar
use a longer wrench
use a smaller wrench
cut the nut or bolt off
Welding cable must be spliced ______ the electrode holder.
within 10 feet of
more than 10 feet away from
within 20 feet of
more than 20 feet away from
To test a grinding stone for cracks ______.
tap the stone in four places and listen for a ring
visually inspect the stone
shine a light under the stone
wet the stone and look for bubbles
______ are usually either hydraulic or flywheel operated.
Cut-off machines
Shears
Power punches
Band saws
The base of a ladder should be set out a distance equal to ______ the height to the point of support.
one-fourth of
half of
one and a half times
twice
