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A.220sin(ωt+90°)V B.220sin(ωt-30°)V C.
A.220sin(ωt+90°)V B.220sin(ωt-30°)V C.
考试题库
2022-08-02
60
问题
A.220sin(ωt+90°)VB.220sin(ωt-30°)VC.220sin(ωt-150°)VD.220sinωV
选项
A.220sin(ωt+90°)V
B.220sin(ωt-30°)V
C.220sin(ωt-150°)V
D.220sinωV
答案
B
解析
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