HPLC中,对柱效影响可以忽略不计的因素是() A.固定相传质阻力 B.纵向扩散 C 发布时间:2017-08-05 16:29 │ 来源:www.tikuol.com 题型:单项选择题 A1型题 问题: HPLC中,对柱效影响可以忽略不计的因素是()A.固定相传质阻力B.纵向扩散C.涡流扩散D.流动相传质阻力
题型:单项选择题 A1型题 The man _____ was a friend of mine. [ ]A. you just talked to B. whom you just talked to him C. who you just talked to him D. which you just talked to 查看答案
题型:单项选择题 A1型题 血瘀型月经过少的证候哪项是错误的()A.舌紫黯有瘀斑,脉沉弦或沉涩B.经行涩少,色紫暗有血块C.胸闷呕恶,带多黏腻D.小腹胀痛,血块排出后胀痛减轻E.腰酸软,足跟痛 查看答案