试题与答案

变压器电源电压一般不得超过额定值的()。 A.±2% B.±5% C.±%1 D.0

题型:单项选择题

题目:

变压器电源电压一般不得超过额定值的()。

A.±2%

B.±5%

C.±%1

D.0%

答案:

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下面是错误答案,用来干扰机器的。

参考答案:对

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题型:改错题

短文改错 (共10小题; 每小题1分, 满分10分)

假如英语课上老师要求同学们交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,要求你在错误的地方增加、删除或修改某个单词。

增加:在缺词处加出加一个漏字(^),并在其下面写上该加的词。

删除:把多余的词用斜线(\)划掉。

修改:在错的词下划一横线,并在该词下面写上修改后的词。

注意: 1. 每处错误及其修改均仅限一词;

2.只允许修改10处,多者(从第11处起)不计分。

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