胃复安阻断中枢催吐化学感受区的多巴胺受体，产生强大的止吐作用。
参考答案：对
解析：
胃复安为中枢性止吐药，止吐作用与阻断中枢催吐化学感受区的多巴胺受体有关。
—What would you wish to do if you were a college student again?
—That's very hard to say, but I wish I when I was a college student.
A．has not studied biology
B．did study biology
C．had studied biology
D．studied biology
外科病人进行肠外营养治疗时，每提供1kcal能量，应供应水（）
A.0.5ml
B.1.0～1.5ml
C.2.0ml
D.2.5ml
E.2.5～3.0ml
