首页建筑工程考试环境影响评价师环境影响评价技术方法
(单选题)

上游来水CODcr(P)=16.7mg/L,QP=9.0m3/s;污水排放源强CODcr(h)=58mg/L,Qh=0.38m3/h,如忽略排污口至起始断面间的水质变化,且起始断面的水质分布均匀,则起始断面的CODcr浓度是()mg/L。

A14.5

B17.61

C19.0

D22.0

正确答案

来源:www.examk.com

答案解析

相似试题

  • (单选题)

    某水域经4次监测CODcr的浓度为:17.3mg/l、18.6mg/l、19.0mg/l、20.6mg/l,用内梅罗法计算CODcr的统计浓度值是()mg/l。

    答案解析

  • (单选题)

    上游来水CODCr(p)=14.5mg/L,Qp=8.7m3/s;污水排放源强CODCr(h)=58mg/L,Qh=1.0m3/s。如忽略排污口至起始断面间的水质变化,且起始断面的水质分布均匀,则起始断面的CODCr浓度是()mg/L。

    答案解析

  • (简答题)

    请使用位操作指令,实现下列逻辑操作: P1.5=ACC.2∧P2.7∨ACC.1∧P2.0

    答案解析

  • (填空题)

    The full title of the U.K. is the United Kingdom of ()and ()

    答案解析

  • (单选题)

    某水域5次CODCr的监测浓度为14.0mg/L、16.5mg/L、20.8mmg/L、18.7mg/L、21.4mg/L,采用内梅罗法计算C0DCr的监测统计代表值为()。

    答案解析

  • (单选题)

    Fair and(1) competition in government procurement around the world is good business and good public policy. Competitive pricing, product(2)and performanceimprovements result from competitive practices and help ensure that government authoritiesget the best (3)for the public they serve.

    答案解析

  • (单选题)

    public and private colleges and universities and community colleges offer().

    答案解析

  • (单选题)

    ()is used for calling and replying,and for transmitting acknowleding and relaying distress alerts.

    答案解析

  • (判断题)

    厌氧水解酸化池的进水CODcr指标

    答案解析

快考试在线搜题