【单选题】在采用放大或者缩小比例时,标注的尺寸应该是 ,并在标题栏的“比例”栏应填写相应的比例。
【简答题】In the mid-1950s, I was a somewhat bored early-adolescent male student who believed that doing any more than necessary was wasted effort . One day, this approach threw me into embarrassment In Mrs. To...
【简答题】已执行: >student<-data.frame( height=c(180,175,178,168,165), +gender=c("male","male","male","femal","femal")) 计算student中不同性别的同学的平均身高,使用with()函数和aggregate()函数,可写做: with(student,{aggregate(__________,_____...
【简答题】阅读理解。 A typical Chinese Internet user is a young male who prefers instant messaging to e-mail, seldom makes online purchases and favors news, music and s sites. According to a study, about two-thi...
【单选题】A lady meets a male manager in the company, who will offer hands first? If she meets the manager in an evening party, who will offer hands first?
A.
the lady, the male manager
B.
the male manager, the lady
D.
the male manager, the male manager
【简答题】已执行: >studentattach(student) 计算student中不同性别的同学的平均身高,使用tapply()函数,可写做: tapply(_________,___________,__________)
【简答题】已执行: >student<-data.frame( height=c(180,175,178,168,165), +gender=c("male","male","male","femal","femal")) 计算student中不同性别的同学的平均身高,使用aggregate()函数,可写做: aggregate(_______,_________,_________) (注释)
【简答题】There were______male actors who appeared with Roberts are mentioned in this passage.
【简答题】已执行: >student<-data.frame( height=c(180,175,178,168,165), +gender=c("male","male","male","femal","femal")) 计算student中不同性别的同学的平均身高,使用tapply()函数,可写做: tapply(____________,______________,_____________)
【判断题】2003年10月党的十六届三中全会通过的《中共中央关于完善社会主义市场经济体制若干问题的决议》,是第一次提出科学发展观的党的文件。()