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室内给水管道的流速:对于连接卫生器具的支管为( ),干管、立管及横管为( )(单选)—5分
A 0.6~1.2m/s;0.6~1.2m/s
B 0.6~1.2m/s;1.0~1.8m/s
C 1.0~1.8m/s;1.0~1.8m/s
D 1.0~1.8m/s;0.6~1.2m/s

参考答案