则停止执行当前程序块，转而执行和新收到的中断相关的程序块。如果接收到的中断级别等同于正在执行的程序块的中断级别，则继续执行当前程序块。将新收到的中断放入队列中。如果接收到的中断级别低于正在执行的程序块的中断级别，则将新收到的中断放入队列中。

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