Checking account（or bank money） 支票帐户（或银行货币）

万方数据库使用布尔逻辑算符anD./or/not.其中A.anD.B表示（）。

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.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

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

下面哪个方法能判断字符串中是否存在和指定正则表达式匹配的字符串；是则返回true，否则返回false：（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。