试题与答案

车间门把手的高度最适合人群的百分位数是() A.1% B.20% C.50% D.7

题型:单项选择题 B型题

题目:

车间门把手的高度最适合人群的百分位数是()

A.1%

B.20%

C.50%

D.70%

E.100%

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B解析:胸腔穿刺抽得脓液对急性脓胸具有确诊意义,且可以进行病原学检查。

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下面这段文字有三句话,各有一处语病,请加以修改。

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