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【单选题】
下列有关MCS-51中断优先级控制的叙述，错误的是（）A.
低优先级不能中断高优先级，但高优先级能中断低优先级
B.
同级中断不能嵌套
C.
同级中断请求按时间的先后顺序响应
D.
同时同级的多中断请求，将形成阻塞，系统无法响应
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知识点：
皮皮学刷刷变学霸
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【简答题】通知一般分为指示性通知、转发性通知、批转性通知、知照性通知、事务性通知和()等六大类。
【单选题】You get into the lift at work and the newcomer is in there. It's a bit awkward to be honest. How do you defuse the situation?
A.
Smile widely and extend your hand for a firm handshake.
B.
Mumble something about him being welcome to the team.
C.
Nothing. No one likes a lift talker.
D.
Make way .
【多选题】下列哪些项目计算建筑面积时是按其水平投影面积的1/2计算（）。
A.
有永久性顶盖的室外楼梯
B.
建筑物的阳台
C.
有永久性顶盖无围护结构的车棚、站台等
D.
有永久性顶盖无围护结构的场馆看台
E.
雨篷结构的外边线至外墙结构外边线的宽度未超过2.1m者
【简答题】You get into the lift at work and the newcomer is in there. It’s a bit awkward, to behonest. How do you defuse the situation?A. Smile widely and extend your hand for a firm handshake. B. Mumble someth...
【判断题】The author is not quite satisfied with the current travel situation because people get pick-pocketed, scammed and robbed.
A.
正确
B.
错误
【单选题】听力原文：W: Well, what did you do? You know the situation is very horrible for you. M: What could I do? I just stood there and watched. W: Why didn't you try to get out? You know it's very dangerous for y...
A.
Because he didn't hear any noise at all.
B.
Because he thought all this was caused by the flu.
C.
Because he thought he was dreaming.
D.
Because he was deaf and fainted.
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