單項(xiàng)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


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1.單項(xiàng)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

2.單項(xiàng)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

3.單項(xiàng)選擇題When backing a motor propelled lifeboat (right-hand propeller) with the rudder amidships，the stern will back（）.

A.straight
B.to port
C.to starboard
D.None of the above

4.單項(xiàng)選擇題When abandoning ship，after launching the motor lifeboat you should（）.

A.plot a course for the nearest land
B.take a vote on which direction you should go
C.stay in the immediate area
D.go in one direction until fuel runs out

5.單項(xiàng)選擇題When abandoning ship and jumping into the water from a substantial height without a life jacket，you should（）.

A.dive head first，using your hands to break the surface of the water
B.hold your arms firmly at your sides and jump feet first
C.jump feet first，covering your nose and mouth with one hand and grasping the opposing upper arm with the other
D.jump feet first，holding your knees to your chest