NULL指针分配的地址空间为( )。
A. 16KB以下
B. 4MB~2GB
C. 2GB~3GB
D. 3GB~4GB
Binet used large numbers of children in his tests because he wanted to find out ______.
A. who were the brightest
B. who had defects
C. what a bright child could do
D. a standard
磁盘存储器的记录方式—般采用( )。
A. 归零制
B. 不归零制
C. 调频制
D. 调相制
实模式下程序的最大地址空间是( )。
A. 4KB
B. 1MB
C. 2GB
D. 4GB