（）, 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 （）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

高压试验装置的高压引线应（）

高压负荷开关与（）串联使用，在高压装置中可以代替高压开关。

高压试验装置的高压引线应（）。

160kVA以上高压供电的工业用户和高压供电装有带负荷调整电压装置的电力用户，功率因数应不小于（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。