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 （）.

（）are liable to be stoten, pilfered or may damaged due to improper handing or stowage.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

GB50203-2011主要技术内容包括：总则、术语、基本规定、砌筑砂浆、砖砌体工程、（）、石砌体工程、配筋砌体工程、填充墙砌体工程、冬期施工。

对于砌体所用砂浆，总的要求是，砂浆应具有足够的（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

砌体工程中，砌筑对砂浆的要求是（）

在石砌体中砌筑砂浆稠度要求是（）。