preemptive scheduling的用法和樣例：
例句
- What is the difference between preemptive scheduling and time slicing?
搶先調度與分時(shí)調度有何不同？ - Under preemptive scheduling, the highest priority task executes until it enters the waiting or dead states or a higher priority task comes into existence.
采用搶先調度方式時(shí)，具有最高優(yōu)先級的任務(wù)先執行直到它進(jìn)入等待或僵死狀態(tài)，或者是有更高優(yōu)先級的任務(wù)產(chǎn)生。
