单项选择题
A.呼吸抑制 B.尿潴留 C.oddi括约肌收缩 D.恶心呕吐
A.硝普钠 B.利多卡因 C.硝酸甘油 D.甲磺酸酚妥拉明 E.硝酸异山梨醇
A.＞15s，＞40s B.＞15s，＞60s C.＞20s，＞40s D.＞20s，＞60s
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