單項(xiàng)選擇題For the purpose of the Rules,except where otherwise required,the term().

A.vessel includes seaplanes
B.seaplane includes non-displacement craft
C.vessel engaged in fishing includes a vessel fishing with trolling lines
D.vessel restricted in her ability to maneuver includes fishing vessels


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1.單項(xiàng)選擇題FLOATING,CAUSED BY WINDS AND CURRENT WITH A DETERMINABLE DIRECTION defines().

A.Floating
B.Sailing
C.Drifting
D.Running into danger

2.單項(xiàng)選擇題By day,you sight a vessel displaying three shapes in a vertical line. The top and bottom shapes are balls,and the middle shape is a diamond. It could be a().

A.vessel trolling
B.mineclearing vessel
C.trawler
D.vessel engaged in replenishment at sea

3.單項(xiàng)選擇題As a rule,ships of most configurations,when drifting in calm water with neglible current,will lie().

A.bow to the wind
B.beam to the wind
C.stern to the wind
D.with the wind on the quarter

4.單項(xiàng)選擇題An inclined semisubmersible with a very short rolling period about a constant angle of list is likely to have().

A.an off-center TCG
B.an LCG greater than level vessel LCB
C.a negative GM
D.excessive free surfaces

5.單項(xiàng)選擇題All of the following are engaged in fishing EXCEPT().

A.A vessel trawling
B.A vessel trolling
C.A vessel setting nets
D.A vessel tending lines