（）, 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 （）.

某公司拟发文给xx大学了解公司在该校委托培训员工学习情况。应使用的文种是（）

某公司拟发文给xx大学了解本公司在该校委托培训员工学习情况。应使用的文种是（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

发文字号简称文号，是发文机关公文编排顺序的代号。发文字号由发文机关代字、年份和序号三部分组成。

通报的发文机关是没有级别限制的。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。