單項(xiàng)選擇題
A.18.2 B.18.3 C.18.24 D.18.20
A.95.44% B.99.73% C.95% D.99%
A.0.95 B.1 C.0.85 D.1.05
A.1.96 B.1.98 C.2 D.1.95
A.摻外加劑混凝土與基準(zhǔn)混凝土 B.基準(zhǔn)混凝土與摻外加劑混凝土 C.摻外加劑混凝土與摻外加劑混凝土 D.基準(zhǔn)混凝土與基準(zhǔn)混凝土
A.1% B.2% C.5% D.3%
A.0.92 B.0.921 C.0.9 D.0.90
A.0.1000g B.0.2000g C.0.5000g D.6.0000g
A.5g/L B.10g/L C.15g/L D.100g/L
多項(xiàng)選擇題
A.計(jì)算變異系數(shù) B.計(jì)算標(biāo)準(zhǔn)差 C.根據(jù)推定強(qiáng)度進(jìn)行合格判定 D.根據(jù)判定公式進(jìn)行合格判定