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【单选题】
实数340.25对应的规格化浮点数为( )。
【单选题】
实数340.25对应的规格化浮点数为( )。
【单选题】
若浮点数尾数共5位,则规格化尾数的负数形式是______。
【单选题】
已知E(X)=1,E(Y)=2,E(XY)=3,则X,Y的协方差Cov(X,Y)=( )
【单选题】
以下函数调用语句中实参的个数是() func((e1,e2),(e3,e4,e5));
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/E2FC9952241B5E56EDB2E0FF44619E4C.jpg title=3.jpg alt=3.jpg/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/8FDFB674E130594652F17AC900296836.jpg title=3-1.jpg alt=3-1.jpg/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/7605CE880AAE46AFA87E748B296ADD8C.jpg title=3-2.jpg alt=3-2.jpg/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/17872D8263A66DBA4A11F87829D1D237.jpg title=3-3.jpg alt=3-3.jpg/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/D8C5587F8BEDA054D133F56638482829.jpg title=3-4.jpg alt=3-4.jpg/>
【简答题】
已知E(X)=1,E(Y)=2,E(XY)=3,则X,Y的协方差Cov(X,Y)=[填空1]
【单选题】
____ the math problem is difficult, Ill try very hard to work it out.
【单选题】
When you meet someone who ____ deeply about something, you probably will want to ask them why they do so.?
【单选题】
Theory is based on practice and in____ serves practice.
【单选题】
When I got there, Henry ____ to the hospital.
【单选题】
The engineers are going through with their highway project, ____the expenses have risen.
【单选题】
A police officer claimed he had attempted to ____ paying his fare.
【单选题】
The students were not____ to leave the classroom without an adequate reason.?
【单选题】
It was a minor illness, and she soon ____ it. ?
【单选题】
Our English teacher demanded that we ____ to English broadcast every day.
【单选题】
He ____ have left the campus, for I saw in the classroom just a minute ago