第5题: [单项选择]口腔医生比护士感染HBV的危险性大,原因是() A. 医生需向患者询问病史 B. 医生与患者之间的距离小 C. 医生经常与患者的唾液接触 D. 医生经常与患者握手 E. 医生自身抵抗力差 参考答案:C 答案解析:研究表明,口腔医务人员反复暴露于血液和唾液,因此较一般人群对某些感染性疾病有较高的发病率。
A. invented modern mathematical applications B. were unaware of the value of their studies C. worked with electricity D. were forced to resign themselves to failure 参考答案:B