A.1mm B.2mm C.4mm
A.70 B.52.5 C.62.5 D.115
A.CaO B.Ca(HCO3)2 C.CaCO3 D.Ca(OH)2
A.3 B.4 C.5 D.6
A.抗凍混凝土 B.高強混凝土 C.大體積混凝土 D.抗?jié)B混凝土