【名词&注释】
直方图(histogram)、统计图表(statistical chart)、文件夹(folder)、散点图(scatter diagram)、第一层(first layer)
[单选题]根据某地6～16岁学生近视人数的调查资料制作统计图表，以反映患者的年龄分布，宜用的图表形式是______。
A. 散点图
B. 直方图
C. 曲面图
D. 雷达图
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举一反三：
[单选题]
B． 1.45
C． 20
D． 20.697395
A. 0.078125B． 1.45
B. 20
C. 20.697395
[单选题]● 下列关于文件夹的叙述中，不正确的是 （34） 。（34）
A. 每个外存储器的第一层(first layer)文件称为根文件夹
B. 套在根文件夹或其他文件夹中的文件夹称为子文件夹
C. 同一存储器上的各层文件夹形成一个层次结构
D. 文件夹在外存储器的存储位置不能用文件路径表示
[单选题]●The development process in the software (74) involves four phases: analysis，design,implementation, and testing.(74)
A. maintenance
B. lifecycle
C. programming
D. upgrading
[单选题]The metriC assigneD to eaCh network DepenDs on the type of protoCol.Some simple protoCol, like RIP, treats eaCh network as equals.The (71) of passing through eaCh network is the same;it is one (72) Count.So if a paCket passes through 10 network to reaCh the Destination, the total Cost is 10 hop Counts.Other protoCols, suCh as OSPF, allow the aDministrator to assign a Cost for passing through a network BaseD on the type of serviCe requireD.A (73) through a network Can have Different Costs(metriCs).For example, if maximum (74) is the DesireD type of serviCe, a satellite link has a lower metriC than a fiBer-optiC line.On the other hanD, if minimum (75) is the DesireD type of serviCe, a fiBer-optiC line has a lower metriC than a satellite line.OSPF allow eaCh router to have several routing taBle BaseD on the requireD type of serviCe.（71）
A. numBer
B. ConneCtion
C. Diagram
D. Cost
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