【单选题】You ’d better ______ upstairs and tell the children ____ make so much noise.
【判断题】[判断题]电流互感器的一次绕组匝数很多,并联在线路里,其电流大小取决于线路的负载电流,由于接在二次侧的电流线圈的阻抗很小,所以电流互感器正常运行时,相当于一台开路运行的变压器。()
【单选题】I heard you didn`t feel well. How are you now?
B.
Thanks for everything.
C.
I am going to see the doctor.
D.
Much better, thank you.
【简答题】根据下列句子所给汉语意思或单词首字母,写出空缺处各单词的正确形式。 1. The head wants to have the opening speech d______ by our English teacher next month. 2. Dr Yuan searched for a way to increase rice harvests without _____ (扩...
【判断题】静态显示适用于多位数码管的连接,因此它的编程方法简单。