自相关函数和互相关函数图形都是对纵坐标对称的图。

如果时间序列的自相关函数和偏自相关函数都是拖尾的，则可以判断此序列适合（）

求正弦函数x（t）=x 0sin（ωt+φ）的自相关函数，并简述自相关函数特性。

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。

自相关函数R_x（t）是一个周期函数，则原信号是一个（）；而自相关函数R_x（t）是一个脉冲信号时，则原信号将是（）。

自相关函数一定是（）函数。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。