口服补液及时纠正脱水，应用ORS，说法正确的是（）

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.

下面关于西安事变的说法正确的是（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

西安邮电大学学报《西安邮电大学学报》在（）2013、2014年度连续2年入选。

西安邮电大学计算机学院2015专任教师总数为多少人？（）

西安邮电大学计算机学院2015在校学生多少余人？（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。