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。

包装是消费者识别品牌、与企业沟通的重要媒介，改进包装是改变品牌形象老化的最直接手段。

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。

脸部护理是美容院提供的最基本的功能服务。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

下列哪个指标是判断机体热平衡是否受到破坏的最直接指标（）

布尔逻辑具体检索时，是通过三个布尔运算符来实现其功能的：AND、OR、（）。