1. He used to _______in the sun,but now he is used to _______at night.
A. read ; read
B. reading ; read
C. read; reading
D. reading; reading
第1题:
第2题:
第3题:
常用的外部数据读取函数有()
A.read.table()
B.read.csv()
C.read.spss()
D.read.txt()
第4题:
第5题:
以下read函数的调用形式中,参数类型正确的是
A.read(int fd,char *buf,int count)
B.read(int *buf,int fd,int count)
C.read(int fd,int count,char *buf)
D.read(int count,char *buf,int fd)
第6题:
R中读取外部文件的函数有()
A.read.table
B.read.csv
C.read.xlsx
D.read.xlsx2
E.read,delim