移动通信是通信的一方或双方在移动中利用有线电波实现的通信。

为了减少趋肤效应的影响，应采取哪些措施？

高频放大器的主要任务是( )高频电视信号。

iTV安装完成后，电视机是黑白显示节目，是电视机高频器坏了。（）

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。

交流电流通过导体时会产生趋肤效应，其结果使导体的电阻减小。（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。