()实现传输线上的位流信号同步。
A. 物理层
B. 数据链路层
C. 网络层
D. 应用层
For what reason did the Puritans among the first immigrants come to America from England
A. They came to America to seek wealth.
B. They just wanted to escape religious persecution.
C. They planned to build a new nation in a new place.
D. They explored the new land for stimulation.
以下四个选项中,不能看作一条语句的是( )。
A. ;
B. a=5,b=2.5,c=3.6;
C. if(a<5);
D. if(b! =5)x=2;y=6;
设有如下定义: struct sk int a;float b; data; int *p; 若要使p指向data中的a域,正确的赋值语句是( )。
A. p=&a;
B. p=data.a;
C. p=&data.a;
D. p=a;