A.should be worn while fighting a fire
B.can be used in atmosphere deficient in oxygen
C.filter contaminants from air that is to be breathed
D.may be substituted for a self-contained breathing apparatus
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A.settle near the bottom of the blige
B.settle near the top of the bilge
C.settle evenly throughout all levels of the bilge by mixing with air
D.disperse to atmosphere
A.sweep flames away with water spray
B.shut off the leak
C.use a chemical foam fire extinguisher
D.call t e local fire department
A.Non-toxic gas
B.oxygen
C.Hydrogen
D.Helium
A.towing bridle
B.main weather cover
C.external lifelines
D.righting strap
A.turned off
B.already
C.almost
D.ready
最新試題
Full details of all lights and fog signals are shown on().
()is where the crew eat their meals.
Bales close to the deckhead should be covered to prevent().
()is on the panel of radar.
The helm command PORT TWENTY means().
Which of the following shall not the officers in charge of the navigational watch do?()
When steering by autopilot,how often should the steering be checked?()
How long are you prohibited to consume alcohol prior to serving as a member of a watch?()
When the wave period and the apparent rolling period are the same().
Before any loading takes place any signs of the previous cargo should do().