题目内容

中药“十八反”中白及反：( )

A. 乌头
B. 半夏
C. 知母
D. 瓜蒌
E. 香附

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一个作业8:00到达系统，估计运行时间为1h，若10:00开始执行该作业，其响应比是____。

The operating system must make _________ types of scheduling decisions with respect to the execution of processes.

A. six
B. five
C. four
D. three

This is a decision whether to add a process to those that are at least partially in main memoryand therefore available for execution:

A. long-term scheduling
B. I/O scheduling
C. short-term scheduling
D. medium-term scheduling

A risk with _________ is the possibility of starvation for longer processes, as long as there is asteady supply of shorter processes.

A. SRT
B. SPN
C. FIFO
D. HRRN