中砂的细度模数μf为( )。A.3.7~3.1 B.3.0~2.3 C.

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问题 中砂的细度模数μf为(   )。A.3.7~3.1B.3.0~2.3C.2.2~1.6D.1.5~0.7

选项 A.3.7~3.1
B.3.0~2.3
C.2.2~1.6
D.1.5~0.7

答案 B

解析 (JTS/T236-2019)
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