【简答题】听录音,选择合适的答语。 ( ) 1. A. ¥20. ( ) 2. A. You are right. ( ) 3. A. It's on the desk. ( ) 4. A. Sure. ( ) 5. A. It's here. B. Two. B. I'd like some fish. B. It's a desk. B. Thank you. B...
【简答题】看图,完成对话。 ¥88 ¥45 A: l. I 2. you? B: Yes. I want a 3. . A: Look, this one is good. Do you like it? B: Yes. 4. ? A: It's 5. yuan. B: Oh, it's expensive. I want a cheap one. A: This one is cheap. It's 6....
【简答题】补全对话。 A. You must have a good time. B. You helped clean up the city park. C. It's a mixture of fun and work. D. Some picked up the waste paper and plastic bags. E. You helped cheer up sick people. F. ...
【单选题】对某电路中一个NPN型硅管进行测试,测得Ube>0,Ubc0,则此管工作在()
【简答题】听音选出你听到的单词。 ( ) 1. A. old ( ) 2. A. six ( ) 3. A. how ( ) 4. A. name B. you B. ten B. are B. your C. year C. two C. am C. you
【单选题】对某电路中一个 NPN 型硅管进行测试,测得 UBE0 ,则此管工作在( )
【单选题】对某电路中一个 NPN 型硅管进行测试,测得 UBE>0 , UBC>0 , UCE>0 ,则此管工作在( )
【单选题】对某一电路中的NPN型硅管进行测试,测量得到Ube>0,Ubc>0,Uce>0,则此管工作在( )
【单选题】对放大电路测试NPN型硅管测得Ube>0,Ubc>0,Uce>0
【判断题】西餐宴会的正方形台又称 “ 回 ” 形台,一般是一个中空的台形。