东风4型内燃机车采用一台TQL-45型同步牵引励磁机,它的励磁绕组电阻在145℃时为 发布时间:2017-08-24 11:55 │ 来源:www.tikuol.com 题型:单项选择题 问题: 东风4型内燃机车采用一台TQL-45型同步牵引励磁机,它的励磁绕组电阻在145℃时为()。A.7.52ΩB.7.42ΩC.7.32ΩD.7.22Ω
题型:单项选择题 —Why are you crying?—I've _____ my ticket. I don't have enough money to buy another one. [ ]A. boughtB. lostC. bookedD. used 查看答案