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[单选题]
根据《建筑施工承插型盘扣式钢管支架安全技术规程》JGJ231规定,采用承插型盘扣式钢管搭设满堂模板支架,模板支架可调托座丝杆外露长度严禁超过()。
A.300mm
B.400mm
C.500mm
D.600mm
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A.300mm
B.400mm
C.500mm
D.600mm
A.200mm
B.300mm
C.400mm
D.500mm
A.5m
B.6m
C.7m
D.8m
A.1.2m
B.1.5m
C.1.8m
D.2m
A.1.3m
B.1.4m
C.1.5m
D.1.6m
A.300mm
B.350mm
C.600mm
D.650mm
A.底层
B.顶层
C.每层
D.底层以及顶层
A.每隔3跨
B.每隔4跨
C.每隔5跨
D.每隔6跨
A.每隔2-4个标准步距
B.每隔3-5个标准步距
C.每隔4-6个标准步距
D.每隔5-7个标准步距