酸雨是如何形成的？分布状况？酸雨的危害？如何防治？ 

酸雨是日益严重的世界环境问题之一，形成酸雨的主要空气污染物是( )。

酸雨是日益严重的世界环境问题之一，形成酸雨的主要空气污染物是（ ）。

简述环境监察政务公开制度？

简述空间等离子体环境的形成原因与分类。

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。