單項(xiàng)選擇題A spark arrestor().

A.keeps sparks from falling into an open tank
B.secures covers on ullage openings
C.prevents sparks from getting out of an enging's exhaust system
D.grounds static electicity


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1.單項(xiàng)選擇題A stay is().

A.standing rigging
B.a downhaul
C.a halyard
D.a jib

2.單項(xiàng)選擇題A survival craft being used to pick up a person who has fallen overboard from a vessel ahould approach the person().

A.at a high rate of speed
B.under oars
C.against the wind
D.with the wind

3.單項(xiàng)選擇題A twin screw craft being used to pick up a person who has fallen overboard from a vessel should approach if you().

A.reverse port engine, apply right rudder
B.reverse port engine,rudder amidships
C.reverse starboard engine, apply right rudder
D.revers starboard engine, rudder amidships

4.單項(xiàng)選擇題A twin-screw ship going ahead on the otarboard screw only tends to move().

A.in a straight line
B.to port
C.from side to side
D.to starboard

5.單項(xiàng)選擇題A vessel moored with two anchors,sometimes, at an exposed roadstead to().

A.aid turing the ship
B.obtain a fine bearing
C.increase ship swing to wind or tide
D.lighten the stress of anchor chains