單項選擇題Which is TRUE concerning immersion suits and their use?（）

A.Only a light layer of clothing may be worn underneath
B.They provide sufficient flotation to do away with the necessity of wearing a life jacket
C.They should be tight fitting
D.A puncture in the suit will not appreciably reduce its value


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1.單項選擇題When using the lifeboat compass，you must be careful to（）.

A.set it on the centerline of the boat
B.apply the correction for compass error
C.keep metal objects away from it
D.All of the above

2.單項選擇題When transferring survivors from an enclosed lifeboat to a rescue vessel，personnel on board the boat should（）.

A.remove their life preservers to make it easier to climb on board the rescue vessel
B.climb on top of the boat while waiting for their turn to transfer to the rescue vessel
C.remain seated inside and make the transfer one person at a time
D.enter the water and swim over to the rescue vessel

3.單項選擇題When operating the air supply system in a covered lifeboat the（）.

A.fuel supply valve should be closed
B.hatches，doors，and oar ports should be closed
C.air cylinder shut-off valve should be closed
D.engine should be shut off

4.單項選擇題When launching an open lifeboat by falls，the boathooks should be（）.

A.secured forward and aft where readily available
B.secured amidships where they will not hinder the personnel
C.used for fending off
D.used for picking up survivors in the water

5.單項選擇題When landing a lifeboat through heavy surf with a strong current running parallel to the beach (from right to left when facing from seaward) the recommended procedure is to（）.

A.approach while coming to the left to take advantage of the current
B.drop an anchor outside the surf line，then pay out anchor line over the bow while the seas carry the boat toward the beach
C.approach slow enough so that the boat can be brought around to meet breaking seas on the bow
D.rig a drogue with tripping line over the bow，back ashore with drogue tripped between breakers