单项选择题
A.BB2A TSGB B.BB2A TSGA C.BB2F TSGA D.BB2F TSGB
A.5 B.6 C.7 D.8
A.M6LA TSDA TSDB B.M6HA TSDA RTDC C.M6HA TSGB RTDA D.M6LA TSGB RTGA