20世纪70年代末，健美操传入我国。

请述健美操与体操、舞蹈的区别。

健美操是20世纪80年代初期传入我国的。

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.

健美操是融音乐、体操、舞蹈为一体的身体练习，其中健美操的灵魂是（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

20世纪80年代末，健美操传入我国。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。