单项选择题
18砖墙的实际厚度为( )。
A.175mm B.178mm
C.180mm D.185mm
A.175mm
B.178mm
C.180mm
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单项选择题
伸缩缝的宽度一般为( )。 A.20~30mm B.6~10mm C.50~70mm D.70~80mm
A.20~30mm
B.6~10mm
C.50~70mm
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单项选择题
( )、变形缝要求从基础到屋顶全部断开。 A.伸缩缝 B.沉降缝 C.防震缝 D.分仓缝
A.伸缩缝
B.沉降缝
C.防震缝
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