搜题请搜索小程序“爱下问搜题”
问题 填空题

若数据80、82、△、79、69、74、78的众数是82，那么△是______．

答案

因为此组数据的众数是82，说明82出现的次数最多，

即可确定△是82；

故答案为：82．

选择题
奇函数f（x）满足f（x+2）=f（x），当x∈（0，1）时，f（x）=2x-1，则f(
3
2
)=（　　）
A．-
2
B．
2
C．-
2
2
D．
2
2
查看答案
单项选择题

（71）analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems. Ultimately, the system models become the （72）for designing and constructing an improved system. （73）is such a technique. The emphasis in this technique is process-centered. Systems analysts draw a series of process models called （74） . （75） is another such technique that integrates data and process concerns into constructs called objects.

（71）处填（）。

A．Prototyping

B．Accelerated

C．Model-driven

D．Iterative
查看答案