A.抗壓強(qiáng)度B.符號“C”C.標(biāo)準(zhǔn)立方體抗壓強(qiáng)度D.立方體抗壓強(qiáng)度標(biāo)準(zhǔn)值
A.20g B.40g C.50g D.60g
A.細(xì)砂 B.中砂 C.粗砂 D.無法判斷
A.1900,1800 B.1800,1800 C.1900,1900 D.1850,1850
A.2.702gB.2.693gC.2.720gD.2.740g
A.2.78MPa;B.2.86MPa;C.3.31MPa;D.3.46MPa。