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。

峰值包络检波器在解调高频等幅波时，其低通滤波器的输出电压为（）。

高、低通滤波器通常以衰减（）dB的频率范围为通频带。

高、低通滤波器通常以衰减小于（）的频率范围为通频带。

F1系列PLC—OR指令表示（）。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

GSM系统中采用什么调制技术？为了产生0.3GMSK信号，当信道数据速率为270Kbps时，求高斯低通滤波器的3dB带宽，并确定高斯低通滤波器的参数α？