（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

The （） is used for hauling in or letting out the wires or ropes.

Vessels must be（）valid certificate of nationality or certificated of registry or license.

When loading or discharging dry mud or cement，crew members should use goggles and（）.

Effects which are dutiable or subject to prohibitions or restrictions should be declared in （）.

当网桥刚加电启动时（）．

计算机刚加电时，（ ）的内容不是随机的。

计算机刚加电时， （ ）的内容不是随机的。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

当计算机处于断电状态下，加电启动DOS系统，这称为DOS系统的（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。