8274脚手架搭设高度为45一下时,竖向连墙件间距应为()。6791—查题无忧(chati51.com)(chati51.com)(chati51)



<>A.<=9.0
<>B.<=8.0
<>C.<=7.0
<>D.<=6.0m
<>
<>

答案解析