单项选择题
A.正同装-倒同装-正分装-倒分装-半倒装 B.倒同装-倒分装-半倒装-正分装-正同装 C.正同装-半倒装-正分装-倒分装-倒同装 D.正同装-正分装-半倒装-倒分装-倒同装
A.1.0% B.1.5% C.2.0%
A.50% B.60% C.70% D.80%