【判断题】T F 12. If short-term sleeping problems are managed properly from the beginning, they will not affect health.
【单选题】— Will Jack need your help? — I won ’ t help him ______ he asks me properly. A. if B. so that C. as long as D. unless
【判断题】本征半导体不带电,P 型半导体带正电,N 型半导体带负电。( )
【判断题】Determine whether the following statements are true or false. Put a “T” if the statement is true, and put an “F” if the statement is false. “The King’s English” used to be a pejorative term which was ...
【单选题】We usually judge others by seeing if they dress themselves properly in public.
【简答题】IV. Off all the things we eat and drink, water is the most important. Not many people realize this but it is quite true. The human body goes without food for a long time, but two or three days withou...
【简答题】英译汉: ¡ If the computer wasn ’ t shut down properly, it will probably run a program to scan the hard drive for errors and try to fix them if found. (Windows users: If the computer prompts you to fix a ...
【判断题】N型半导体和P型半导体中的多数载流子性质不同,N型半导体带负电,而P型半导体带正电,所以PN结形成内电场。
【单选题】If you become so stressed that you can ’ t function properly, you should seek _______ help.
【判断题】N型半导体,P型半导体中的多数载流子性质不同,N型半导体带负电,而P型半导体带正电,所以PN结形成内电场。