【单选题】
Premiere 是Adobe 公司最早是基于什么平台开发的视频编辑软件?
【简答题】
Direction: Fill in the blank with the correct form of the word given.2. One has to be especially careful under such[填空1](circumstance).
【简答题】
Direction: Fill in the blanks with the words given below. Change the form if necessary.[integrity; conscience; yield; appoint; assure; ensure; demonstrate; clarify; preserve; scarce]2. Feeling that the directions for the exercise were difficult to understand, the students asked the teacher to[填空1]them by explaining them further.
【简答题】
设总体X的概率密度函数为:<img src="https://huaweicloudobs.ahjxjy.cn/F7726573AE266BD64057D1404FAE0500.png" title="11.png" alt="11.png"/>其中<img class="jc-formula" data-tex="\alpha 1" src="https://huaweicloudobs.ahjxjy.cn/31D91B666038B5A1687DE1E316A11099.png" style="vertical-align: middle;"/>是未知参数,<img class="jc-formula" data-tex="{ X }_{ 1 },{ X }_{ 2 }{ ,\quad ...\quad ,\quad X }_{ n }" src="https://huaweicloudobs.ahjxjy.cn/613AB336B03760930A7C8648F6773526.png" style="vertical-align: middle;"/>是取自总体X的样本,求参数<img class="jc-formula" data-tex="\alpha " src="https://huaweicloudobs.ahjxjy.cn/DEFDC04456737669FDEF7C42924B9B9C.png" style="vertical-align: middle;"/>的矩估计。
【简答题】
若D(X)=25,D(Y)=36,cov(X,Y)=12,则<img class="jc-formula" data-tex="{ \rho }_{ XY }" src="https://huaweicloudobs.ahjxjy.cn/F93A35519606553990779681E00AC347.png" style="vertical-align: middle;"/>=[填空1]
【判断题】
影响网站风格的最重要的因素是特效和架构。
【多选题】
在Dreamweaver中,只需要三个参数( )来加入一个Shockwave影片。