以下关于进程优先权大小的设置的说法中,正确的是
A.计算型作业的优先权,应该高于I/O型作业的优先权
B.用户进程的优先权,应该高于系统进程的优先权
C.长进程的优先权,应该高于短进程的优先权
D.静态优先权在创建进程时就已确定
正确答案是D
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