吗啡镇痛作用机制是A.抑制中枢阿片受体 B.抑制大脑边缘系统 C.激动中枢阿片受体 发布时间:2018-07-17 05:29 │ 来源:www.tikuol.com 题型:单项选择题 问题: 吗啡镇痛作用机制是A.抑制中枢阿片受体B.抑制大脑边缘系统C.激动中枢阿片受体D.抑制中枢前列腺素的合成E.降低外周神经末梢对疼痛的感受性
题型:单项选择题 Perhaps you ________ stop playing computer games now. Your boss may be turning up in the office at any moment.A.willB.mustC.shouldD.can 查看答案