从双方信息交互的方式来看，通信有以下三个基本方式：单工通信、半双工通信和全双工通信。()

从通信双方信息交互的方式划分，可以有以下几种通信方式（）。

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。

STA可以通过扫描发现AP，方式有主动扫描和被动扫描两种方式。

捕获信号频谱，可用于频谱扫描、频谱分析和干扰分析等的仪表为（）。

身份认证的方式主要有：（）、基于智能卡的认证方式和基于生物特征的论证方式。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。