（）, 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 （）.

人体内消化食物和吸收营养物质的主要场所是（）

人体内的（）是消化食物，吸收营养物质的主要场所

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

我们吃的各种食物中的能量最终都来源于：（）

人体是一个极其复杂的系统，所需要的营养素是均衡的，需要我们在日常生活中多元化地摄取食物，这样才能满足机体生理活动的需要，推荐每日摄取多少种食物（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。