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问题 单项选择题

下面关于对粗大误差的说法，不正确的是（）。

A、粗大误差也称为疏忽误差

B、粗大误差与随机误差一样，都是一种无规律可循的误差

C、粗大误差的测量结果毫无意义，应避免

D、粗大误差主要是属于操作者粗枝大叶、过度疲劳、疏忽大意所造成的

答案

参考答案：B

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根据短文内容和首字母提示完成所缺单词。

George Ellet had a bright silver dollar for a New-year gift. He thought of all the fine things he might buy with it.

The ground was all covered with snow and e 小题1:   looked beautiful.

So George p 小题2:   on his hat, and ran into the street. As he went a  小题3:   the street, he met some boys throwing snowballs. George soon joined t  小题4:  . He sent a snowball at James Mason, but it missed him, and broke a window on the o   小题5:   side of the street. George was so frightened that he ran off as fast as he c   小题6:  .

S 小题7:  , George stopped because he was very sorry for what he had done. He said to h 小题8: , “I ought to go back, and pay for the glass I broke with my s 小题9:.

At last he said, “It was w 小题10:  to break the window, though I did not mean to do it. I will go and pay for it. If it takes all my money, I will try not to be sorry.”
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正n边形的一个外角的度数为36°，则这个多边形的边数为（    ）．
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