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【多选题】
扣件式钢管脚手架横向水平杆应满足下列要求:()A.
凡立柱与纵向水平杆的相交处均必须设置一根横向水平杆，严禁任意拆除
B.
脚手架的横向水平杆，其两端均应用直角扣件固定在纵向水平杆上
C.
脚手板采用三支点支承
D.
脚手板必须采用搭接平铺
E.
其主要作用是承受脚手板传递来的荷载并传给剪刀撑
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皮皮学刷刷变学霸
举一反三
【简答题】19–10+5=
【单选题】The teacher said to me, “Have you finished your homework?”
A.
The teacher asked me whether I have finished my homework.
B.
The teacher asked me whether I finished my homework.
C.
The teacher asked me whether had I finished my homework.
D.
The teacher asked me whether I had finished my homework.
【简答题】计算 65-5=() 19-10=() 15-9=() 88-8=() 7+20=() 8+40=() 70+8=() 78–8=() 78–70=() 5+70=() 75–70=() 75–5=() 77–7=() 69–60=() 28–20=()
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