單項(xiàng)選擇題

The lockmaster has given you permission to tie off on the lower guide wall to wait your turn to lock through. What should you be most concerned with? （）

A.A downbound vessel
B.An upbound vessel
C.Current reaction when the lock chamber is being emptied
D.Current reaction when the lock chamber is being filled

你可能感興趣的試題

單項(xiàng)選擇題

The length of chain between the anchor and the end of the pendant line is called the（）.

A.pigtail chain
B.thrash chain
C.crown chain
D.wear chain

單項(xiàng)選擇題

The holding power of an anchor at a given scope of cable increases when the（）.

A.amount of chain lying along the bottom increases
B.length of the catenary is reduced
C.mooring line tension is increased
D.amount of chain lying along the bottom decreases

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The lockmaster has given you permission to tie off on the lower guide wall to wait your turn to lock through. What should you be most concerned with? （）

你可能感興趣的試題

The length of chain between the anchor and the end of the pendant line is called the（）.

The holding power of an anchor at a given scope of cable increases when the（）.