钢丝绳“二、四”起头眼环插接，除起头外，还应插几次（）。A.21次B.27次C.34次

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

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

When the anchor is brought to and holding，the horizonta...

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

When picking up your mooring at the buoy，the correct me...

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

水手工艺

钢丝绳“二、四”起头眼环插接，除起头外，还应插几次（）。