单选题：If an OS is not facilitated with virtual memory management, then
If an OS is not facilitated with virtual memory management, then @[A](1)
A. A process has to be loaded fully in memory before execution and kept staying in memory
B. A process does not have to be loaded fully in memory before execution, neither does stay in memory
C. A process does not have to be loaded fully in memory before execution, however has to stay in memory during execution
D. A process has to be loaded fully in memory before execution, however does not have to stay in memory during execution
A.A process has to be loaded fully in memory before execution and kept staying in memory
B.A process does not have to be loaded fully in memory before execution, neither does stay in memory
C.A process does not have to be loaded fully in memory before execution, however has to stay in memory during execution
D.A process has to be loaded fully in memory before execution, however does not have to stay in memory during execution
答案：A
A. A process has to be loaded fully in memory before execution and kept staying in memory
B. A process does not have to be loaded fully in memory before execution, neither does stay in memory
C. A process does not have to be loaded fully in memory before execution, however has to stay in memory during execution
D. A process has to be loaded fully in memory before execution, however does not have to stay in memory during execution
A.A process has to be loaded fully in memory before execution and kept staying in memory
B.A process does not have to be loaded fully in memory before execution, neither does stay in memory
C.A process does not have to be loaded fully in memory before execution, however has to stay in memory during execution
D.A process has to be loaded fully in memory before execution, however does not have to stay in memory during execution
答案：A