已知随机变量XU(0,3),则D(X)等于() A: 1/2 B: 3/4 C: 3/5 D: 2/3

Which of the following are the right order of the 12 Earthly Branches（） A: Zi, Chou, Yi, Mao, Si B: Wu, Shen, You, Xu, Shu C: Mao, Chen, Si, Wu, Wei D: Yin, Mao, Chen, Si,Wu

The author of the photographs of The Founding Ceremony is _____. A: Yuan Muzhi B: Wu Yinxian C: Hou Bo D: Xu Xiaobing

Which of the following are the right order of the 12 Earthly Branches? A: A. Zi, Chou, Yi, Mao, Si B: B. Wu, Shen, You, Xu, Shu C: C. Mao, Chen, Si, Wu, Wei D: D. Yin, Mao, Chen, Si,Wu

假设x=4,y=5,下列哪个逻辑表达式是真的? A: !(x==4)^y!=5 B: x!=4^y==5 C: x==5^y==4 D: x!=5^y!=4

假设x=4,y=5,x!=4^y==5

下列表达式中，比较结果为true的是（）。 A: $x=5；$x==4； B: $x=5；$x<>4； C: $x=4.0；$x===4； D: $x=4；$x<4；

已有定义语句：int x=6,y=4,z=5;,执行以下语句if(x A: x=4,y=5,z=6 B: x=5,y=6,z=4 C: x=4,y=6,z=6 D: x=4,y=5,z=5

求不定积分[img=115x46]17da65382f8e1b9.png[/img]； （ ） A: x - (5*log(x + 1))/4 - (3*log(x - 3)) B: (5*log(x + 1))/4 - (3*log(x - 3)) C: x - (5*log(x + 1))/4 - (3*log(x - 3))/4 D: (5*log(x + 1))/4 - (3*log(x - 3))/4

根据PPT上程序选择正确答案（）。 A: x=4,y=5,z=6 B: x=4,y=5,z=4 C: x=4,y=5,z=4 D: x=4,y=4,z=4