（）, 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。

交岔点设计包括平面尺寸设计、断面形状及尺寸、材料消耗量、工程量计算。

负责组织水利水电工程专业承包一级资质施工企业管理人员水利水电工程安全生产知识和能力考核的部门是（）。

负责组织水利水电工程专业承包一级资质施工企业管理人员水利水电工程安全生产知识和能力考核的部门是()。

在流量一定，渠道断面形状、尺寸一定时，随底坡增大，临界水深将（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。