【单选题】当三相异步电动机的定子电压突然降为原电压的80%的瞬间,其电磁转矩
【单选题】当三相异步电动机的定子电压降为原来的 80 %,其电磁转矩为
【单选题】某人聪明、好动、热情、反应敏捷,且容易兴奋和激动,但常常缺乏耐心和毅力。他的气质类型属于
【判断题】公司应该有独立的法人财产,并以其全部财产对公司的债务承担责任。
【单选题】.We waited and waited._________ we had been looking forward to.
B.
Then did the hour come
【单选题】使用热熔胶进行粘接时,错误的说法是( )
B.
使用时,不能将热熔胶枪放在手边上,以免被烫伤。
C.
使用完毕后,一定要关掉热熔胶枪的开关,并拔出插头。
【简答题】We have a terrible school trip last weekend. Some students were late. Then we waited half an hour for the school bus, but it didn’t arrive. Finally, our teacher took us to take the subway. It took us ...
【单选题】他带我出去吃饭,等饭时却自顾自地查看他的电子邮件。
A.
He take meout for dinner and read his e-mail while we waited for our food.
B.
He takes me out for dinner and reads his e-mail while we waited for our food.
C.
He took me out for dinner and read his e-mail while we waited for our food.
D.
He will take me out for dinner and read his e-mail while we waited for our food.
【单选题】某人聪明、好动、热情、反应敏捷,易兴奋、激动,但缺乏耐心和毅力。这种气质类型属于