（）, 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 （）.

（）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。

框架结构中，梁与柱的连接节点可以采用（）的形式。

在框架结构中，设计规范对框架梁中线与柱中线两者间的关系作了规定，下列叙述中哪项是正确的？（）

附着升降脚手架的防倾装置必须与竖向主框架、附着支承结构或工程结构可靠连接，防倾装置应用钢管扣件或碗扣方式同竖向主框架或附着支承结构连接，不得采用螺栓。（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。