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【多选题】
MCS51 单片机多个中断源同时触发时,其响应中断的原则包括以下哪些 ( )A.
只有中断源对应的使能位被设置有效时，响应中断
B.
当前正在执行的指令的机器周期会被中止，立刻去响应中断
C.
最先响应优先级最高的中断源
D.
中断响应结束后，自动回到中断之前的位置继续执行原程序
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【简答题】阅读理解。 I have a love-hate feeling with 8 o'clock classes. I like to get started that early, but most students don't. They usually came in late and looked sleepy at that hour. One day I was really angry...
【简答题】正常供电电源的容量要满足施工现场所有用电的需求，通常备用电源比正常电源的容量要小。
【简答题】正常供电电源的容量要满足施工现场所有用电的需求，通常备用电源比正常电源的容量要大。
【单选题】A: Have you had breakfast, Lily? B: No. I didn't ______ like eating anything this morning. [ ]
A.
look
B.
sound
C.
feel
D.
taste
【单选题】—Sorry，Mum, I lost my key to the bicycle again． —Oh! How you be so careless! You have to learn to look after your belongings．
A.
can
B.
may
C.
must
D.
dare
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