单项选择题
A.石窖B.水泥池C.陶缸D.砖窖
A.0.20g/LB.0.30g/LC.0.50g/LD.1.00g/L
A.30~65%volB.40~60%volC.15~65%volD.21~69%vol
A.GB/T 10781.2B.GB/T 10781.1C.GB/T 26760D.GB/T 10781.3
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