A.under,for
B.in,to
C.in,for
D.under,to
第1题:
What's ( )job? Are ( ) British?
A. your, your
B. you, your
C. your, you
第2题:
1、R语言读取数据的方法中,哪一种是不正确的()
A.read.table(“clipboard”,header = T)
B.read.table(“textdata.txt”,header = T)
C.read.table(“textdata.xlsx”,header =T)
D.read.csv(“textdata.csv”,header = T)
第3题:
3、下列两个事务的指令是冲突指令的是
A.T1:Read(M), T2:Write(N)
B.T1:Write(M),T2:Write(N)
C.T1:Write(N),T2:Read(N)
D.T1:Read(N), T2:Read(N)
第4题:
A.don’t … at
B.didn’t … at
C.didn’t … in
D.don’t ...in
第5题:
R语言读取数据的方法中,哪一种是不正确的()
A.read.table(“clipboard”,header = T)
B.read.table(“textdata.txt”,header = T)
C.read.table(“textdata.xlsx”,header =T)
D.read.csv(“textdata.csv”,header = T)
第6题:
下列两个事务的指令是冲突指令的是
A.T1:Read(M), T2:Write(N)
B.T1:Write(M),T2:Write(N)
C.T1:Write(N),T2:Read(N)
D.T1:Read(N), T2:Read(N)