测试装置的脉冲响应函数与它的频率响应函数间的关系是（）。

时间函数f（t）与它的FT频谱称-（）。

集合与它的边界的并集称集合的（）。

函数与它的反函数的几何图形关于Y轴对称。

x（t）的频谱是X（f），y（t）的频谱是Y（f），若在频域内X（f）与Y（f）作相乘运算，则对应在时域内x（t）与y（t）应作（）

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。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。