【单选题】T he qu e s t i on c a m e up a t t he m ee t i ng w e h a d e nough m on e y f or our r e s ea r c h. A . t h a t B . w h i c h C . w h e t h e r D . i f
【简答题】设H是Hilbert空间,T:D(T) H→H是自共轭算子.证明
【简答题】设H 1 ,H 2 是Hilbert空间,T:D(T) H 1 →H 2 是线性算子,|·|是D(T)上关于T的图范数.证明T是闭的当且仅当(D(T),|·|)是完备的.
【单选题】思想品德课课堂导入的方法有哪些?() ①情境式导入 ②材料式导入 ③问题式导入 ④衔接式导入
【简答题】A.H.TI+T2 B.(1-H.T1)+H.T2 C.T2-H.T1 D.H.T1+(1-H).T2
【简答题】Directions: For this part, you are allowed 30 minutes to write a short essay entitled Buying and Selling Stocks as a Student. You should write at least 150 words following the outline given below: 1. ...
【单选题】His father mentioned (to me) that Robert (had written to) (him) requesting money (for buying) a new car.