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【判断题】
动力转向架安装在动车下面A.
正确
B.
错误
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【简答题】A linguistic (1) is a linguistic item which has identifable (2), which are the different forms which can be used in an environment. For example, words like singing and fshing are sometimes pronounced ...
【简答题】废气再循环(Egr)就是将()中的一部分引入燃烧室中参与燃烧过程。EGR电控系统的功能主要是根据()的运行工况控制EGR率,在大负荷或者()时,发动机不进行废气再循环,而在其他工况下,随进气量的(),EGR量也()
【单选题】An argument can be sound (in the technical sense used in this course) when
A.
its premises and conclusion are both true.
B.
its premises are conclusion are both false.
C.
its premises are false, and its conclusion is true.
D.
its premises are true, and its conclusion is false.
E.
more than one of the above. (That is, a sound argument can have more than one of these combinations of truth values.)
【判断题】Non-standard words usually refer to slangs, jargons, dialects and obsolete words. They sound vivid and colorful, and can be used in all kinds of writings.
A.
正确
B.
错误
【单选题】It can be inferred from the passage that______.
A.
light waves could be used in a device similar to radar
B.
radar was a practical application of a well-known principle
C.
radar gready increased the effectiveness of the Royal Air Force
D.
sound waves are reflected from a hillside under all conditions
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