【单选题】Look at the children. ______ they are laughing! [ ]
【单选题】测量三相电路功率时,不论电路是否对称( )
【单选题】Look at the _____ girl! How_____ she is dancing! [ ]
【单选题】Look at the ______ girl! How ______ she is singing.
【简答题】翻译:How happily the dolphin is playing!
【单选题】_____ the students were hearing the exciting news! [ ]
【判断题】理论上说,当用两功率表法测量三相三线制电路的有功功率或电能时,不管三相电路是否对称都能正确测量
【单选题】How _____ the girls are playing! [ ]
【单选题】_________ happily the children are flying kites! [ ]