单项选择题Inflatable liferafts are less maneuverable than lifeboats due to their().

A.shape
B.shallow draft
C.large sail area
D.All of the above


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1.单项选择题In which situation could a vessel most easily capsize?()

A.Running into head seas
B.Running in the trough
C.Running with following seas
D.Anchored with your bow into the seas

2.单项选择题In heavy seas you decide to heave to. The lifeboat should be().

A.brought to a position with the stern into the seas
B.allowed to take its own head
C.brought to lay in the trough
D.brought bow into the seas

3.单项选择题In heavy seas the helmsman should steer the motor lifeboat().

A.into the seas
B.broadside to the seas
C.in the same direction as the seas
D.in a series of figure-eights

4.单项选择题In an open lifeboat,the lifeboat compass is usually().

A.placed in a fixed bracket when being used
B.clamped to any position convenient for the coxswain to see it
C.permanently mounted on the lifeboat's centerline
D.mounted in the center of the boat to eliminate deviation

5.单项选择题If you must land on a beach with an oar-propelled lifeboat through a heavy surf,the recommended method is to().

A.keep the bow directly in toward the beach,and tow the sea anchor off the stern
B.ride in on the back of a large breaker
C.keep the bow into the seas with the sea anchor out over the bow,and row to meet the breaking waves
D.head directly into the beach by staying between the crests of the waves

6.单项选择题If you have to jump in the water when abandoning a vessel,your legs should be().

A.spread apart as far as possible
B.held as tightly against your chest as possible
C.in a kneeling position
D.extended straight down and crossed at the ankles

7.单项选择题If the coxswain of your lifeboat gives the command HOLD WATER you should().

A.complete the stroke,raise your oar slightly,swinging the oar slightly forward,and place it in the boat
B.lift the oar in a vertical position
C.complete the stroke and hold the oar out of the water
D.dip the blade of your oar into the water vertically and hold it perpendicular to the keel line

8.单项选择题For a ship not on an international voyage,an approved substitute for an impulse projected rocket-type line throwing appliance is a().

A.spring loaded line thrower
B.hand thrown buoyant line
C.shoulder-type line throwing gun
D.heaving line

10.单项选择题An obstruction on a helideck is any object that might present a hazard to the().

A.rotor blades and landing gear
B.unloading of passengers
C.loading of cargo
D.pilot's visibility