采用抢先调度方式时，具有最高优先级的任务先执行直到它进入等待或僵死状态，或者是有更高优先级的任务产生。

Under preemptive scheduling, the highest priority task executes until it enters the waiting or dead states or a higher priority task comes into existence.

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采用抢先调度方式时，具有最高优先级的任务先执行直到它进入等待或僵死状态，或者是有更高优先级的任务产生。

Under preemptive scheduling, the highest priority task executes until it enters the waiting or dead states or a higher priority task comes into existence.

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