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


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1.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

2.單項(xiàng)選擇題A vessel’s bottom will be subjected to tension when weight is concentrated().

A.amidships
B.aft
C.at both ends of the vesel
D.forward

3.單項(xiàng)選擇題A vessel’s quarter is that section which is().

A.abeam
B.dead astern
C.just aft of the bow
D.on either side of the stern

4.單項(xiàng)選擇題A V-shaped ripple with the point of the V pointing upstream in a river may indicate a().

A.submerged rock, not dangerous to navigation
B.sunken wreck, not dangerous to navigation
C.towed-under buoy
D.All of the above

5.單項(xiàng)選擇題A wet cargo refers to().

A.a cargo that will be damaged if it gets wet
B.bulk liquids
C.cargoes that will cause condensation
D.liquids in containers