单选题：Which of the following is incorrect for the CPU long-term schedu
Which of the following is incorrect for the CPU long-term scheduler? @[B](1)
A. It controls the degree of multi-programming.
B. It runs as often as short-term scheduler.
C. It selects a good process mix of I/O-bound and CPU-bound processes.
D. It can be a user rather than a program.
A.It controls the degree of multi-programming.
B.It runs as often as short-term scheduler.
C.It selects a good process mix of I/O-bound and CPU-bound processes.
D.It can be a user rather than a program.
答案：B
A. It controls the degree of multi-programming.
B. It runs as often as short-term scheduler.
C. It selects a good process mix of I/O-bound and CPU-bound processes.
D. It can be a user rather than a program.
A.It controls the degree of multi-programming.
B.It runs as often as short-term scheduler.
C.It selects a good process mix of I/O-bound and CPU-bound processes.
D.It can be a user rather than a program.
答案：B