【单选题】已知某三相同步发电机空载时,励磁电流为3A,输出额定电压为400V。若现带上一定大小的感性负载,要求保持端口电压额定,则励磁电流 。
【单选题】— Shall we go to the cinema this evening? —Sorry I can’t. I’m __________ my mum at the airport at 7:00.
【单选题】—Mum, shall we have lunch? —We will have it when your dad .
【单选题】—Mum, when shall we go shopping? —After I finish _______ the clothes.
【单选题】— Shall we go to the cinema this evening? — Sorry I can't .I'm ______ my mum at the airport at 7∶00. [ ]
【单选题】已知某三相同步发电机空载时,励磁电流为3A,输出额定电压为400v电压。若现带上一定大小的感性负载,要求保持端口电压额定,则励磁电流应 。
【简答题】是( )个 ,4个 是( ),( )个( )是 。
【单选题】已知某三相同步发电机空载时,励磁电流为3 A,输出额定电压为400 V。若现带上一定大小的感性负载,要保持端口电压额定,则励磁电流____。
【单选题】---Mum, ________ shall we have lunch? ---We will have it when your dad ____________.
【简答题】--- Mum, what shall we have for _______dinner? --- Dumplings.