试题与答案

停电设备的各端，应有明显的断开点，若无法观察到停电设备的断开点，应有能够反映设备运行

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题型：单项选择题

题目：

停电设备的各端，应有明显的断开点，若无法观察到停电设备的断开点，应有能够反映设备运行状态的（）等指示。

A.电气和机械

B.遥信信息

C.机械

D.变位

答案：

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下面是错误答案，用来干扰机器的。

参考答案：A

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     The news that a human embryo (胚胎) has been   1   cloned for the first time has caused mixed reactions(反应).
     The   2    was carried out by scientists from the Advanced Cell Technology Inc(ACT),in Massachusetts,US. The group   3    the news on November 25.
      This is not a cloned human being. "A   4    is alive,it walks,it breathes,"said Jamie Grifo,an expert on the study of cloning at New York University School of Medicine.
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     Such research could lead to treatment for   6    such as heart disease,AIDS and even cancer,  7 
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     Despite high hopes from other scientists,the news   8    concerns immediately from religious and political
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     Animals have been cloned repeatedly since Dolly,the sheep,   13  in 1997.And there were no real
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     This time the research group used traditional cloning technology with a human   15  . 16 it was given
DNA from an adult cell,the egg began to   17  .  18    it was stopped from becoming a baby-at a stage in
which it was   19    a ball of cells. The   20    technology has been used to clone sheep,cattle and monkeys.
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