Among the following alphabets, which represents the set of real numbers?
A: [img=17x19]1803e23f00fc6ff.png[/img]
B: [img=16x19]1803e23f094d639.png[/img]
C: [img=16x23]1803e23f11ad763.png[/img]
D: [img=13x19]1803e23f19b956d.png[/img]
A: [img=17x19]1803e23f00fc6ff.png[/img]
B: [img=16x19]1803e23f094d639.png[/img]
C: [img=16x23]1803e23f11ad763.png[/img]
D: [img=13x19]1803e23f19b956d.png[/img]
举一反三
- Among the following alphabets, which represents the set of rational numbers? A: [img=17x19]1803e23ef7a8014.png[/img] B: [img=16x19]1803e23f0073511.png[/img] C: [img=16x23]1803e23f09992a8.png[/img] D: [img=13x19]1803e23f147ace0.png[/img]
- Among the following alphabets, which represents the set of natural numbers? A: [img=15x19]1803e23ed5a1d4d.png[/img] B: [img=16x19]1803e23edda8313.png[/img] C: [img=16x23]1803e23ee60c466.png[/img] D: [img=13x19]1803e23eeeda8f3.png[/img]
- 设随机变量[img=52x13]17e0c0edb27595a.gif[/img]，[img=60x31]17e0c0edbed05c6.gif[/img]，X与Y相互独立，则[img=90x14]17e0c0edcb304a8.gif[/img]= A: -13 B: 15 C: 19 D: 23
- 设有二叉排序树（或二叉查找树）如下图所示，建立该二叉树的关键码序列不可能是（ ）。[img=237x185]17e43acdb959cb1.png[/img] A: 23 31 17 19 11 27 13 90 61 B: 23 17 19 31 27 90 61 11 13 C: 23 17 27 19 31 13 11 90 61 D: 23 31 90 61 27 17 19 11 13
- 计算S到F的最短距离（ ）[img=556x142]18032b24ccd872f.png[/img] A: 21 B: 23 C: 24 D: 19