若i1=10sin(wt+30°)A,i2=20sin(wt-10°)A,则的相位比 发布时间:2021-01-11 00:16 │ 来源:www.tikuol.com 题型:单项选择题 问题: 若i1=10sin(wt+30°)A,i2=20sin(wt-10°)A,则的相位比超前()A.20°B.-20°C.40°D.-40°
题型:单项选择题 用户国际漫游回拨拨打13901234567号码拨号方式正确的是()。A.**139*0013901234567#B.**139*008613901234567#C.**139*860013901234567#D.**139*8613901234567# 查看答案