试题与答案

已知1m砖墙的勾缝时间为7min,则每1m一砖厚墙所需的勾缝时间为()min。 A.

题型:单项选择题

题目:

已知1m砖墙的勾缝时间为7min,则每1m一砖厚墙所需的勾缝时间为()min。

A.12.00

B.21.92

C.29.17

D.33.33

答案:

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下面是错误答案,用来干扰机器的。

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