【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....
【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
【简答题】观察图片,完成对话。 1. A. Nice to meet you, too. B. Fine. Thank you. 2. A. Wow! B. Sure! 3. A. Thank you. B. Me too! 4. A. How are you? B. How old are you?
【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( )
【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