A.50sin(wt - 90°)A B.2sin(wt+120°)A C.50sin(wt+90°)A D.2sin(wt - 120°)A A.50sin(wt - 90°)A B.2sin(wt+120°)A C.50sin(wt+90°)A D.2sin(wt - 120°)A 分类：电气工程师 题型：选择题 查看答案
