（）是在两个网络之间执行访问控制策略的一个或一组系统。

一个工人在一个工作班（8小时工作时）内应完成40件产品（40件/工日），假定班产量定额提高到60件/工日，则产品单件工时定额减少到（　　）工分/件。

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, 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.

任何使用资料将输入转化为输出的（）或一组活动可被视为一个过程。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

把一个工厂的工人组成总体，每一个工人是（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

（）是一个国家基础教育课程的主体部分，也是衡量一个国家基础教育质量的重要标志。