（）, 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。

食品中的细菌污染数量（细菌总数）反映了食品的一般卫生质量，以及食品在某些过程中的卫生措施和管理情况。这些过程是

食品卫生学中的食品细菌污染一般是指那类细菌对食品的污染（）

食品卫生学中的食品细菌污染一般是指哪类细菌对食品的污染

食品细菌污染主要指什么细菌对食品的污染（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。