A.①②③④⑤⑥ B.⑥⑤③②④① C.⑥③②①④⑤ D.⑥①④③②⑤
A.1442 B.1243 C.1330 D.1401
A.368公斤 B.472公斤 C.3320公斤 D.332公斤
A.38.4% B.B,61.6% C.34.5% D.35.6%