What is the main difference between the two parts of the city?.
A. The colour of the buildings.
B. The age of the buildings.
C. The colour of the roofs.
D. The length of the streets.
第1题:
关系模式CSZ(CITY,ST,ZIP)其属性组上的函数依赖集为F={(CITY,ST)+ZIP, ZIP→CITY},关系模式CSZ的主属性是
A.ZIP
B.CITY,ST,ZIP
C.CITY,ZIP
D.ST,ZIP
第2题:
有以下程序: main() { char *S[]={"one","two","three"},*p; p=s[1]; printf("%c,%s\n", *(p+1), s[0]); } 执行后输出结果是( )。
A.n,two
B.t,one
C.w,one
D.o,two
第3题:
关系模式CSZ(CITY,ST,ZIP)其属性组上的函数依赖集为F={(CITY,ST)→ZIP,ZIP→CITY},关系模式CSZ的主属性是
A.ZIP
B.CITY,ST,ZIP
C.CITY,ZIP
D.ST,ZIP
第4题:
关系模式CSZ(CITY,ST,ZIP)其属性组上的函数依赖集为F={(CITY,ST)→ZIP, P→CITY},关系模式CSZ的主属性是
A.ZIP
B.CITY,ST,ZIP
C.CITY,ZIP
D.ST,ZIP
第5题:
有以下程序
main()
{char *s[]={"one","two","three"},*p;
p=s[1];
printf("%c,%s\n",*(p+1),s[0]);
}
执行后输出结果是
A.n,two
B.t,one
C.w,one
D.O,two
第6题:
3.Is her lifestyle. the same as yours or ________? What are the________?
A. difference, different
B. different ,difference
C. different ,differences
D. difference , differences