单项选择题
A.0.3 B.0.3% C.502/0.3/1 D.不填
A.SCZU7854343/SCZU7855234 B.SCZU7854343/20/自重 C.SCZU7854343*1 (3) D.SCZU7854343*2 (2)
A.502/25/1 B.0.25 C.502/0.3/1 D.不填