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

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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

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

单项选择题

Any vessel in need of carrying out deck washing must be（）by the department concerned beforehand.

A.requested
B.allowed
C.approved
D.inquired