A.55.3 B.60 C.63.5 D.65
A.①、②、③、④、⑥ B.①、②、③、⑤、⑥ C.①、③、④、⑤、⑥ D.①、②、③、④、⑤、⑥
A、90 B、95 C、75 D、60
A.50×50×5020℃±3℃7天3个 B.50×50×5020℃±3℃5天3个 C.70.7×70.7×70.720℃±3℃28天6个 D.70.7×70.7×70.720℃±3℃15天6个
A.20 B.30 C.15 D.10
