单项选择题X 纠错
A.700mm B.1500mm C.800mm D.2000mm
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单项选择题
A.5m B.8m C.10m D.13m
A.10%~15%;5%~8% B.5%~8%;10%~15% C.15%~20%;18%~23% D.18%~23%;15%~20%
A.11% B.15% C.8% D.20%
A.0.8~1.1 B.0.7~1.1 C.1.2~1.3 D.1.5~1.7
A.0.5~1.4m3 B.1.5~3m3 C.3~5m3 D.>5m
A.20~30m B.5~10m C.10~15m D.15~20m
A.5%~10% B.20%~30% C.10%~15% D.15%~20%
A.5m B.10m C.15m D.20m
A.5%~10% B.10%~20 C.20%~30% D.30%~40%
A.风管式通风 B.巷道式通风 C.对流式通风 D.风道式通风
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