我们经常在搜索时使用组合关键词来提高检索的效率，下列表达式中，具有相同搜索效果的是（）。 ①深圳夜景 ②深圳OR夜景 ③深圳-夜景 ④深圳+夜景

简述法人的民事权利能力概念及其与公民民事权利能力的区别。

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.

简述验试测试、鉴定测试和认证测试的区别。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

简述数码相机中光学变焦与数码变焦的区别？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

按测验的功用分类可分为学绩测验、能力测验、()。