抗心律失常药奎尼丁、利多卡因、普萘洛尔共有的电生理作用正确的是() ["降低自律性,延长有效不应期","提高自律性,延长有效不应期","延长有效不应期,加快传导","降低自律性,加快传导","提高自律性,减慢传导"]
大叶性肺炎() ["脓血痰","铁锈色痰","粉红色泡沫样痰","砖红色胶冻样痰","脓臭痰"]
男,18岁,因右下腹疼痛5天,伴发热3天就诊。查体:右下腹压痛,可触及包块3cm×3cm,白细胞15×109/L,初步诊断() ["急性肠梗阻","盲肠癌","回盲部结核","阑尾周围脓肿","克罗恩病"]
男,70岁,上唇一个毛囊尖处出现红肿、疼痛的结节,中央部有灰黄色小脓栓形成,错误的处置是() ["休息","外敷鱼石脂膏","挤出脓栓,以利引流","应用抗生素","湿热敷"]
JavaScript中,不正确的逻辑表达式是?() ["a>;6","tmp<;=18","sak!20","tmp1=tmp2"]
血细胞的发育过程分()、()和()等三个过程。