A.60s B.90s C.120s D.150s
A.0.02%;0.10%;40t B.0.02%;0.15%;60t C.0.01%;0.15%;40t D.0.01%;0.10%;60t E.0.02%;0.20%;60t
A.450min B.420min C.460min D.435min
A.1/4 B.1/2 C.3/4 D.1
A.不合格 B.合格 C.應立即重做 D.應立即用試餅法重做,并以試餅法結(jié)果為準
A.47.4% B.48.0% C.48.6% D.49.0%