与葡萄球菌肠毒素产生无关的因素是() ["食物存放温度","食物受葡萄球菌污染的程度","食物存放地点的通风状况","加入甜味剂的量","食品的种类"]
关于中期妊娠检查与体征的表述,哪项是错误的() ["子宫增大与孕月相符","从孕早期至孕中期,胎动逐渐增多","孕妇于孕18~20周开始自觉胎动","孕18~20周可听到胎儿心音","孕20周可经腹壁触及宫内胎体"]
下列哪项特点不属于超声波() ["空化作用","微细按摩效应","声化效应","热效应","压力效应"]
患者女,65岁。6个月内4次出现突然不能言语,每次持续10~15min。1个月前第3次发作,伴右侧肢体麻木,之后服用阿司匹林100mg/d。3h前第4次发作(10min后完全缓解)而来诊。神经系统检查正常。正确的抗栓治疗是() ["A.继前阿司匹林治疗","氯吡格雷75mg\/d","阿司匹林联合氯吡格雷治疗","口服华法林,并严密观察国际标准化比值(INR)","肝素","低分子肝素"]
弓形虫发育阶段最主要的形态有() ["滋养体","包囊","裂殖体","配子体","卵囊"]
简述急性脊髓炎的诊断要点。