按照标准差已知统计方法评定砼强度时,其强度应同时满足下列要求()
A:mfcu≥fcu,k+0.7σfcu,min≥fcu,k-0.7σ;
B:mfcu≥fcu,k+0.8σfcu,min≥fcu,kk-0.8σ;
C:mfcu≥fcu,k+0.85σfcu,min≥fcu,k-0.85σ;
D:mfcu≥fcu,k+0.95σfcu,min≥fcu,k-0.95σ。
出自:五强两比