A.轉(zhuǎn)8A、轉(zhuǎn)8G型 B.轉(zhuǎn)K2、轉(zhuǎn)K3型 C.轉(zhuǎn)K3、轉(zhuǎn)K4型 D.轉(zhuǎn)8G、轉(zhuǎn)K2型
A.50% B.40% C.30% D.20%
A.66% B.55% C.45% D.33%