肠病性肢端皮炎的皮损好发于() ["曝光和摩擦受压部位","皮肤细嫩和皱褶部位","腔口周围","躯干","四肢"]
妊娠8周时声像图所见,不正确的是()。 ["妊娠囊约占宫腔1/3","胚胎初具人形","妊娠囊平均内径为25mm","可见卵黄囊","可以辨认胎盘"]
有关踝关节骨折治疗中错误的是() ["骨折解剖对位","踝穴不宜过大或过小","内固定坚强","反复整复,争取闭合复位,以免手术","早期功能锻炼"]
在进行ELISPOT时,选择的特异性抗体应该具有的特点不包括() ["高亲和力","高特异性","低内毒素","直接参与或干扰细胞分泌功能","敏感性强"]
对于风湿性心脏炎的治疗,首选药物为() ["阿司匹林","青霉素","消炎痛","肾上腺皮质激素","布洛芬"]
简述正畸的分牙方法。