当一个检索表达式含有多个布尔算符时，执行的顺序为NOT优先运算，AND其次，OR最后。如要改变，可用（）改变运算顺序，将需要优先运算者置于其中。

在操作Excel时，如果需要打开多个不相邻的工作簿文件，则需要在―打开‖对话框里，按（）键，单击要打开的文件名，最后单击―打开‖按钮

金属或合金的加热温度达到其固相线附近时，晶界氧化和开始部分熔化的现象称为过热。（）

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。

青铅接口铅加热熔化时，铅熔至（）时，除去熔铅表面杂质，即可浇入承插口内。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

将卷材背面用喷灯或火焰喷枪加热熔化，靠其自身熔化后粘性与基层粘结在一起形成防水层的施工方法是（）。