问题
判断题
机组甩掉电负荷到零后,转速可能不变,可能升高,可能超速也可能下降。
答案
参考答案:错
机组甩掉电负荷到零后,转速可能不变,可能升高,可能超速也可能下降。
参考答案:错
阅读对话,在方框中选择正确的句子填在下面的横线上。
Tony:Yes.I’m from China,and my hometown is Shanghai. Betty:Shanghai?(2)_________________ Tony:Yes,it is. Betty:(3)________________ Tony:About thirteen million people. Betty:(4)______________ Tony:No,it isn’t Beijing is smaller than Shanghai. Betty:(5)_______________ Tony:It’s very cold. Betty:Is it colder than Beijing? Tony:No,it isn’t.It’s warmer than Beijing. Betty:Oh,I like Beijing better. |