问题
单项选择题
分度值为0.02和0.05mm测量上限至1000mm的游标卡尺外量爪测量面的平面度，要求不超过（）。
A.0.002mm
B.0.005mm
C.1/10分度值
答案
参考答案：C
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分度值为0.02和0.05mm测量上限至1000mm的游标卡尺外量爪测量面的平面度，要求不超过（）。
A.0.002mm
B.0.005mm
C.1/10分度值
参考答案：C
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| Who Is Cleverer, the Son or the Father? Mr Clarke works in a middle school. He likes reading and often 1 some books from the library. He keeps 2 to the radio every morning and reading 3 after supper. So he knows much and teaches well. His 4 worship (崇拜) him very much. Mike, Mr Clarke's little son, is only nine. He 5 likes reading books. And he often asks his father some questions. Mr Clarke always thinks he's too 6 to understand him and chooses the easiest ones 7 . Of course the boy is not happy with (对……满意) it. One day Mike read 8 about the electric lights (电灯) and was 9 it. When his father told him to do some housework, he was on thinking of it. He asked him 10 questions, and his father answered all. Then his father said proudly (自豪地), "Fathers always know more than sons!" The boy thought 11 a while (一会儿) and said, " 12 !" "Oh? Why?" Mike didn't answer 13 asked instead (反而), "Who invented (发明) the electric lights?" " 14 " answered Mr Clarke. "Why didn't his father invent them, then?" Looking at his son, Mr Clarke didn't know 15 to answer! | ||||
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