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【单选题】
以下不同受体对应的阻断剂正确的是
A.
α受体-阿托品
B.
M受体-六烃季胺
C.
N2受体-酚妥拉明
D.
β受体-普萘洛尔(心得安)
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A.
15
B.
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C.
输出错误
D.
0
【单选题】以下程序执行后sum的值是( )void main(){int i,sum;for(i=1;i6;i++) sum+=i;printf(%d\n,sum);}
A.
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B.
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C.
不确定
D.
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A.
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B.
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【简答题】动词填空。 1. What a beautiful picture! Can it ________ (put) up at Christmas? 2. —Where's my pen?  —I just ________ (put) it here on the desk. 3. Mum told me spring ________ (follow) winter. 4. She ______...
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