采用热继电器作电动机过载保护时,其容量应选择电动机额定电流的()。 A.100%~1 发布时间:2018-04-15 21:51 │ 来源:www.tikuol.com 题型:单项选择题 问题: 采用热继电器作电动机过载保护时,其容量应选择电动机额定电流的()。A.100%~125%B.110%~150%C.100%~135%D.110%~125%
题型:单项选择题 —The heavy snow hasn't caused any inconvenience to people in Nanjing, has it?—Yes. Just imagine the city ________ with nearly 20 centimeters of snow one night.A.has been hitB.was hitC.had been hitD.is hit 查看答案
题型:单项选择题 用户名为XUEJY的正确电子邮件地址是______。A.XUEJY@163.comB.XUEJYbj163.comC.XUEJY@163.comD.XUEJY@bj163.com 查看答案