B. opened
C. picked up D put aside
[单选题]A.) put inB.) take overC.) make upD.) set off
[单选题]A. gatheredB. speededC. workedD. picked
[单选题]The film was picked up by a branch of 20th Century Fox and will be in a few cities this fall.A.freedB.openedC.startedD.released
[单选题]A. .review B. performance C. practice D. homework
A.αB.α C.α D.不能确定显著性检验中,若显著性水平为,则犯第二类错误的概率为().A.B.C.D.不能确定
[单选题]A. fetched B. allowed C. expected D. took
[单选题]A. sinceB. cousinC. withinD. violin
[单选题]A. finding B. proving C. deciding D. knowing
(B.)递减. (C.)不连续. (D.)连续.【例2】设$g(x)=\int_{0}^{x}f(u)du$,其中$f(x)=\begin{cases}\fra
65.9º b. 45º c. 60º d. 90º氢原子处在态,其轨道角动量与z轴的夹角为( )a. 65.9º b. 45º