（）, 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。

不需贮存于棕色带磨口塞试剂瓶中的标准溶液为（）。

不需贮于棕色具磨口塞试剂瓶中的标准溶液为（）。

油状物粘住磨口塞时，可用微火慢慢加热后打开。

需长期保存的磨口仪器要在塞间垫一张纸片，以免日久粘住（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。