A.12% B.12.55% C.12.75% D.3%
A.8.0% B.10.03% C.9.6% D.9.6‰
A.甲方案較優(yōu) B.乙方案較優(yōu) C.兩個(gè)方案一樣好 D.無(wú)法判斷