“微信扫一扫”进入题库练习及模拟考试
立杆垫板应采用长度不少于( ),厚度不小于( )宽度不小于( )的木垫板。
A.2跨,100mm,200mm
B.3跨,50mm,200mm
C.2跨,50mm,200mm
D.3跨,50mm,100mm
参考答案:C
进入考试题库