以粪-口途径传播为主,随着卫生条件的改善和疫苗的接种,发病率有所下降的是()
A. 甲型肝炎
B. 乙型肝炎
C. 丙型肝炎
D. 丁型肝炎
E. 戊型肝炎
患者,男,26岁,癫痫大发作半年,每月4~5次。既往:10年前(14岁时)右侧头部外伤史,当时右额顶部凹陷性骨折,下凹0.8cm,当时无阳性体征,未行手术。此次入院CT示右额顶区有一高密度影,直径0.5cm大小,其周围有低密度区,无占位效应。 从此例病例中,你得到的关于小儿凹陷骨折的治疗原则是
A. 处理应持积极态度,任何部位的凹陷性骨折均应手术复位
B. 当时不需处理,待后期产生症状或引起癫痫,再考虑手术
C. 只要受伤时无神经功能障碍,即无需手术
D. 运动区的凹陷性骨折深度超过0.5cm,即应手术治疗
E. 处理原则与成人相同
Section ADirections: This section is to test your ability to give proper answers to questions. There are 5 recorded questions in it. After each question, there is a pause. The questions will be spoken two times. When you hear a question you should decide on the correct answer from the 4 choices marked A), B), C) and D) given in your test paper. Then you should mark the corresponding letter on the Answer Sheet with a single line through the center.
A. Sorry, I don’t know.
B. Thank you.
C. It’s OK.
D. I like it.
某机床制造厂喷漆车间女工,年龄28岁。工龄5年,近期发现月经血量增多。化验白细胞总数为4000×109/L。 导致该女工月经异常的有害因素是
A. 苯
B. 二硫化碳
C. 噪声、振动
D. 铅
E. 三氯乙烯