单项选择题

船舶高空作业不宜在何种情况下进行（）。

A.锚泊
B.系浮筒
C.航行中

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热门试题

单项选择题

When the anchor is brought to and holding，the horizontal component of anchor cable tensions should equal the（）.

A.displacement tonnage
B.weight forces
C.buoyancy forces
D.environmental forces

单项选择题

When picking up your mooring at the buoy，the correct method is to（）.

A.approach the buoy with the wind and current astern
B.approach the buoy with the wind and current ahead
C.approach the buoy with wind and sea abeam
D.stop upwind and up current and drift down on the buoy