首页/ 题库 / [单选题]用万能杆件组拼成桁架肘,当高度为( )时的答案

用万能杆件组拼成桁架肘,当高度为( )时,腹杆为三角形。

单选题
2021-09-01 19:54
A、1m
B、2m
C、3m
D、4m
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正确答案
B

试题解析

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