單項(xiàng)選擇題A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in().

A.generators
B.oil drums
C.the bridge
D.combustible metals


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1.單項(xiàng)選擇題A position obtained by applying only your vessel’s coures and speed to a known position is a().

A.dead-reckoning position
B.fix B.estimated position
C.probable position
D.running fix

2.單項(xiàng)選擇題A right-handed propeller will cause the survival craft to().

A.walk the stern to starboard in reverse
B.walk the stern to port in reverse
C.run faster than a lefe-handed propeller
D.right itself if capsized

3.單項(xiàng)選擇題A sea anchor is().

A.a heavy anchor with an extra long line used to anchor in deep water
B.a cone shaped bag used to slow down the wind drift effect
C.a padeye to which the sea painter is made fast
D.made of wood if it is an approved type

4.單項(xiàng)選擇題A self-contained breathing apparatus is used to().

A.make underwater repairs to barges
B.determine if the air in a tank is safe for men
C.enter areas that may contain dangerous fumes or lack oxygen
D.resuacitate an unconscious person

5.單項(xiàng)選擇題A set of interior steps on a ship leading up a deck from below is known as().

A.a companion way
B.tween-decks
C.stairs
D.Any of the above are acceptable