题目内容
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[主观题]
高碑店污水厂中水滤池的滤速为()A.>20m/hrB.5-10m/hrC.1-3m/hrD.<1m/hr
高碑店污水厂中水滤池的滤速为()A.>20m/hrB.5-10m/hrC.1-3m/hrD.<1m/hr
高碑店污水厂中水滤池的滤速为()
A.>20m/hr
B.5-10m/hr
C.1-3m/hr
D.<1m/hr
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