试题与答案

硝酸甘油影响最小的血管是A.小动脉 B.小静脉 C.冠状动脉的阻力血管 D.冠状动脉

题型:单项选择题

题目:

硝酸甘油影响最小的血管是

A.小动脉

B.小静脉

C.冠状动脉的阻力血管

D.冠状动脉的侧枝血管

E.冠状动脉的输送血管

答案:

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参考答案:A解析: 要使得每个绿地的树苗不同,且要求分得树苗最多的绿地最少可分得的树苗,则应该使其他的绿地树苗尽可能的多,若其他4个绿地分别为4,5,6,7,则第5块绿地为4,不符合题意;若其他4个绿地分别...

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