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【单选题】
波函数 ψ 用于描述 ( )A.
电子的能量
B.
电子在空间的运动状态
C.
电子的运动速率
D.
电子在某一空间出现的几率密度
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【简答题】Good friends know how to keep a secret. If you tell them “Please, don’t tell anyone,” they’ll take it seriously. Don’t worry – your secrets won’t fly around the world. Toxic friends say things they sh...
【单选题】___ you have finished your homework, you can go and play with your friends.
A.
As if
B.
So that
C.
Even if
D.
Now that
【判断题】If you have a bad time with your parents, you can go to a pub and talk about it with your friends.
A.
正确
B.
错误
【简答题】当温度升高时，三极管的等电极电流I（），发射结压降BEU（）。
【单选题】If you don’t have enough money, I think you should _____ some _____ your friends.
A.
borrow; for
B.
borrow; from
C.
lend; from
D.
lend; to
【简答题】当温度升高时,三极管的等电极电流I____,发射结压降UBE____。
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