單項選擇題If you wear extra clothing when entering the water after abandoning ship it will（）.

A.weigh you down
B.preserve body heat
C.reduce your body heat
D.make it more difficult to breathe


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1.單項選擇題If you shorten the scope of anchor cable，your anchor’s holding power（）.

A.decreases
B.increases
C.remains the same
D.has no relation to the scope

2.單項選擇題If you saw flames aboard a vessel but could see the vessel was not on fire，you would know that the（）.

A.crew was trying to get warm
B.vessel required immediate assistance
C.vessel was attempting to attract the attention of a pilot boat
D.vessel was being illuminated for identification by aircraft

3.單項選擇題If there are a number of survivors in the water after abandoning ship，they should（）.

A.tie themselves to the unit so they won't drift with the current
B.form a small circular group to create a warmer pocket of water in the center of the circle
C.send the strongest swimmer to shore for assistance
D.form a raft by lashing their life preservers together

5.單項選擇題If it is impossible to avoid a hurricane in the Northern Hemisphere，the most favorable place to be when the storm passes is in（）.

A.the dangerous semicircle
B.the eye (center) of the storm
C.that half of the storm lying to the right of the storm's path
D.that half of the storm lying to the left of the storm's path