试题与答案

污水排放企业排放的总铬和六价铬最高允许排放浓度是( )。A.0.5mg/L和1.0m

题型:单项选择题

题目:

污水排放企业排放的总铬和六价铬最高允许排放浓度是( )。

A.0.5mg/L和1.0mg/L

B.1.5mg/L和0.5mg/L

C.1.5mg/L和1.0mg/L

D.0.5mg/L和0.5mg/L

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B解析:物业服务企业的种类。

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