【简答题】听下面一段对话,回答第1-3小题。 1. What is the woman? [ ] A. A teacher. B. A student. C. A businesswoman. 2. What will the woman do on Tuesday night? [ ] A. Study. B. See a film. C. Go out for dinner. 3. Wh...
【单选题】两个硅稳压管,Uz1=5V,Uz2=10V,下面( )不是两者串联时可能得到的稳压值。
【简答题】听第 7 段材料,回答第 8 、 9 题。 8 . What is the woman doing? A . She is a date with the man. B . She is an invitation. C . She is a promise. 9 . What time is proper for the man to see the w...
【简答题】P 型半导体是在本征半导体中加入( )后形成的杂质半导体。