单项选择题
A.13.6B.13.7C.13.65D.13.60
A.150~180mmB.190~220mmC.180~200mmD.230~260mm
A.5B.2C.1D.3
A.(3~6)r/minB.(2~5)r/minC.(4~7)r/minD.(3~5)r/min
A.10:55B.10:45C.10:50D.10:35
A.0.06%B.0.2%C.0.3%D.0.1%
A.拌合用水与胶凝材料接触的瞬间B.全部材料投完C.粗细骨料投完
A.超出1000m3B.超出2000m3C.超出5000m3
A.超出1000m3B.超出2000m3C.超出500m3
A.标记:A-C60-230(S4)-GB/T14902-2012B.标记:B-HS-C60-230(S5)-GB/T14902-2012C.标记:B-C60-230(S5)-GB/T14902-2012
A.S4级B.S3级C.S1级