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【单选题】
选择正确的处理步骤:( ) 当检索返回的网页较少或着没有匹配的信息时,可按照下面方法进一步处理: 1换一种搜索工具试一下,每种搜索工具的检索方式和所拥有资料的侧重点不同。 2检查关键词的拼写是否有误,关键词组合是否有自相矛盾的地方。 3将用某些关键词用更常见的同义词替代后重新进行搜索。A.
①②③
B.
②③①
C.
③②①
D.
③①②
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【简答题】Translate the following into Chinese The engine gives the power to the automobile. It can convert fuel into the energy that moves the automobile. And without the engine, the automobile can’t move, so ...
【单选题】Which of the following is NOT the result of polluting the search engine?
A.
Traffic jam in the Internet.
B.
Upsetting the consumers.
C.
Decreasing Google's credibility.
D.
Decreasing companies' profits.
【单选题】Which of the following operational conditions will occur to the diesel engine lube oil at extremely high temperature?
A.
The oil oxidizes and forms carbon deposits
B.
The viscosity increases
C.
Engine oil consumption decreases
D.
Lubricating qualities of the oil are enhanced
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