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【单选题】
当CPU处于用户态时，它可以执行的指令是 。A.
计算机系统中的全部指令
B.
仅限于非特权指令
C.
仅限于访管指令
D.
仅限于特权指令
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反馈参考答案：
举一反三
【单选题】听力原文：M: This astronomy problem is giving me a headache. W: Try taking it one step at a time. What does the woman advise the man to do?
A.
Approach the problem in a logical fashion.
B.
Time how long it takes to solve the problem.
C.
Be patient with the problem.
【简答题】按摩时由 轻到重,在由 到 。
【单选题】听力原文：M: This astronomy problem is giving me a headache. W: Try taking it one step at a time. What does the woman advise the man to do?
A.
Approach the problem in a logical fashion.
B.
Time how long it takes to solve the problem.
C.
Take a couple of aspirin and then rest a hit.
【单选题】听力原文：M: This astronomy problem is giving me a headache. W: Try taking it one step at a time. What does the woman advise the man to do?
A.
Approach the problem in a logical fashion.
B.
Time how long it takes to solve the problem.
C.
Take a couple of aspirin and then rest a bit.
【单选题】听力原文：W: Are you having a good time? M: Sure. Thanks again for inviting me. W: No problem. I just wish more people could have come. Q: How does the woman feel? (6)
A.
Excited.
B.
Thankful.
C.
Somewhat disappointed.
【单选题】现已运行的( )是世界上一次性建成通车里程最长的高速铁路,同时也是中国西北高寒风沙区域修建的首条高速铁路。
A.
兰新高铁
B.
哈大高铁
C.
京沪高铁
D.
京广高铁
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