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【单选题】
关于MG危象不正确的是（）A.
危象就是急骤发生呼吸肌严重无力，以至不能维持换气功能
B.
肌无力危象常因抗胆碱酯酶药量不足引起
C.
胆碱能危象是由于抗胆碱酯酶药过量所致
D.
反拗危象是由于对抗胆碱酯酶药不敏感所致
E.
判断危象性质，可用新斯的明试验
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【单选题】听力原文：W: I can't decide whether to take classes this summer or to find a summer job. M: I think you will learn more by working and you'll also make money for the next term. Q: What is the man's suggest...
A.
Finding a summer job.
B.
Working and studying.
C.
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D.
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【单选题】听力原文：W: I can't decide whether to take classes this summer or to find a summer job. M: I think you will learn more by working and you'll also make money for the next term. Q: What is the man's suggest...
A.
Finding a summer job.
B.
Taking the summer classes.
C.
Working and studying.
D.
Wait until later to decide.
【简答题】完形填空。 Big things were happening in my life the summer after I turned 13. In the middle of that summer , my parents 1 my entire world and turned it upside down 2 they told me they were getting a divorc...
【单选题】用与非门设计四变量的多数表决电路,当输入变量 A 、 B 、 C 、 D 有三个或三个以上为 1 时输出为 1 ,输入为其他状态时输出为 0 。正确的设计电路是 。
A.
B.
C.
D.
D
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