程控交换软件中，维护管理系统含呼叫控制子系统、话务统计子系统、维护子系统、测试子系统及计费子系统。（）

专业技术人员的界定——专业技术人员和专业技术管理人员。

税务信息技术岗位实操课程包括专业案例和专题工作报告。

网络认证技术只是单向认证技术

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.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

宁天城际信号系统主要包括的子系统有：ATC子系统（列车自动控制）：ATP和ATO、DCS子系统（数据通信系统）和MSS子系统（维护支持系统）、ATS子系统（列车自动监控）、（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。