号灯的技术要求主要有哪几方面（）

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。

从技术角度上看数据安全的技术特征主要包含哪几个方面？（）。

煤炭自然的条件包括下面哪几个方面（）。

古代希腊自然科学最大特点就是自然科学知识与哲学思想交织在一起

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。