溃疡性结肠炎常可出现( ) A.米泔样便 B.柏油样便 C.黏液便 D.脓血便 E. 发布时间:2017-02-05 21:18 │ 来源:www.tikuol.com 题型:单项选择题 问题: 溃疡性结肠炎常可出现( )A.米泔样便B.柏油样便C.黏液便D.脓血便E.稀汁样便
题型:单项选择题 胸腺嘧啶与尿嘧啶结构的差别是胸腺嘧啶 ______尿嘧啶______。()A.C2上有NH2 C2上有OB.C5上有甲基 C5上无甲基C.C4上有NH2 C4上有OD.C5上有羟甲基 C5上无羟甲基E.C1上有羟基 C1上无羟基 查看答案
题型:单项选择题 It was only with the help of the local guide __________.A.was the mountain climber rescuedB.that the mountain climber was rescuedC.when the mountain climber was rescuedD.then the mountain climber was rescued 查看答案