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.

When loading or discharging dry mud or cement，crew members should use goggles and（）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

系统模型一般不是系统对象本身，而是现实系统的描述、模仿或抽象。

Demand curve（or demand schedule） 需求曲线（或需求表）

以下哪些情况会造成提示“Incorrect number or IP address”？（）

因为理论模型是现实的抽象化，所以理论模型远比现实复杂。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。