政府采取了先发制人的行动，以防止恐怖袭击发生。

The government took ___preemptive action to prevent a terrorist attack.

军方决定采取先发制人的行动，摧毁敌方的导弹基地。

The military decided to carry out a ___preemptive strike to destroy the enemy's missile base.

这个系统采用了抢占式多任务处理，可以更有效地分配CPU资源。

This system uses ___preemptive multitasking to allocate CPU resources more efficiently.