超声探头最重要的部分是() ["A．保护层","B．匹配层","C．压电振子","D．阵子聚焦透镜","E．探头驱动电路"]
超声图像中，形成线状强回声的是() ["A．皮肤","B．脂肪","C．纤维组织","D．结石","E．实质脏器"]
患者，男性农民，右眼被谷物弹伤，视物模糊1个月就诊。检查：右眼视力0.5，结膜充血，角膜有黄白色病灶，污秽，伴前房积脓。该患者最有效的治疗方法是() ["A．氟嗪酸滴眼液","B．两性霉素滴眼液","C．利巴韦林(病毒唑)滴眼液","D．硼酸滴眼液","E．地塞米松滴眼液"]
患者，男性农民，右眼被谷物弹伤，视物模糊1个月就诊。检查：右眼视力0.5，结膜充血，角膜有黄白色病灶，污秽，伴前房积脓。最可能的诊断是() ["A．铜绿假单胞菌(绿脓杆菌)性角膜溃疡","B．真菌性角膜溃疡","C．蚕食性角膜溃疡","D．病毒性角膜溃疡","E．淋菌性角膜溃疡"]
简述艾滋病的传染源和传播途径。=
饮食调护失当有哪些后果？
