A.acids or alkalies
B.diesel oil
C.acids，but not alkalies
D.alkalies，but not acids
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A.without losing the rhythm of respiration
B.only with the help of two other people
C.by not stopping the respiration for more than 5 minutes
D.at ten-minute intervals
A.directly under the boom
B.moving away from the boom
C.stopped dead in the water
D.tied to the boom
A.hoist man
B.limit switch
C.brake handle
D.preventer bar
A.is
B.is to be
C.will be
D.being
A.with puncture wounds
B.when all other means have failed
C.when the victim is unconscious
D.to prevent bleeding from minor wounds
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Seawater may be used for drinking（）.
The lifeboat releasing gear lever should be marked with the words（）.
Number 3 lifeboat would be（）.
The most effective first aid treatment for chemical burns is to immediately（）.
In order for combustion to occur inside a piping system such as a vapor collection header in a marine emmission control system，there must be（）.
The device that allows a floating ship to sway without bending the marine riser system is the（）.
Once you have established the daily ration of drinking water in a survival situation，how should you drink it?（）
Sign(s) of respiratory arrest requiring artificial respiration is(are)（）.
The FIRST treatment for a surface burn is to（）.
The minimum concentration of a vapor in air which can form an explosive mixture is called the（）.