●Thebasic concept of a data (72) is the difference between data and information.
(72) A.warehouse
B.storage
C.base
D.service
第1题:
●The (72) tells the computer what to do.
(72) A.disk
B.memory
C.program
D.data
第2题:
在有13个元素构成的有序表data[1..13]中,用折半查找(即二分查找,计算时向下取整)方式查找值等于data[8]的元素时,先后与(41)等元素进行了比较。
A.data[7]. data[6]. data[8]
B.data[7]. Data[8]
C.data[7]. data[10]. data[8]
D.data[7]. data[10]、data[9]. data[8]
第3题:
第4题:
● Spyware and other forms of malware are the biggest online threat to your computer's (71) nowadays. These malicious (72)which get to your PC through freeware, shareware, commercial sites, deceptive pop-ups or in any other way, can record your surfing habits and sites you visit, share your personal information with their partners. Any personal (73), when inwrong hands, can leave you a victim of an "identity theft" by steeling your credit (74)details,birth records and other (75) information.
第5题:
第6题:
将数据库导入R语言后,可用()显示数据库结构,用()查看数据库行列数,用()查看每个变量的基本统计值。
A.str(data) summary(data) dim(data)
B.str(data) dim(data) summary(data)
C.dim(data) summary(data) str(data)
D.summary(data) dim(data) str(data)