2、为保证所测BOD5的准确性，经稀释后的水样培养五天后，溶解氧的残留量应在( )以上。 A. 1.0mg/L B. 2.0mg/L C. 3.0mg/L - 查题网

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河南成教 / 工程变形测量

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2、为保证所测BOD5的准确性，经稀释后的水样培养五天后，溶解氧的残留量应在( )以上。

A. 1.0mg/L

B. 2.0mg/L

C. 3.0mg/L

D. 4.0mg/L

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工程变形测量

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