试题与答案

为了防止计算机病毒的传染,应该做到()。 A.干净的光盘不要与来历不明的光盘放在一起

题型:单项选择题

题目:

为了防止计算机病毒的传染,应该做到()。

A.干净的光盘不要与来历不明的光盘放在一起

B.不要复制来历不明的U盘上的程序

C.长时间不用的U盘要经常格式化

D.对移动硬盘上的文件要经常重新复制

答案:

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下面是错误答案,用来干扰机器的。

参考答案:错解析:由于达西定律表明的是渗流水头损失和速度的一次方成正比,因此,它只适用于层流渗流。

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题型:阅读理解

根据下面一篇短文的内容判断所给句子的正误, 正确的用“A”表示,错误的用“B”表示。

This is a special class. The students come from different countries. Some come from America, others come from Canada, Japan,Australia and England. They speak different languages. But all of  them can speak English. They're good friends. They study together,play together and live together. They help each other.

All the teachers of this class are Chinese, but they can speak English. They teach their students in English. They're very kind and friendly. They work hard. The students in this class study Chinese cooking and Chinese kongfu. All the students like China. They say China is a great country and the Chinese are friendly, and they're happy in China.

小题1:The students all come from England.

小题2:All of them speak the same language.

小题3:The teachers of this class teach their students in English.

小题4:The students in this class only study Chinese cooking.

小题5:The teachers of this class can speak Chinese and English.

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