某男,25岁,操作工,由于开错阀门管道,致使光气外溢,下班后感到...
Wednesday, September 14, 2022
Wednesday, September 14, 2022
Wednesday, September 14, 2022
Wednesday, September 14, 2022
给白喉病人的易感接触者先后注射白喉抗毒素、白喉类毒素,这种免疫为...
Wednesday, September 14, 2022
“三环节”和“两因素”在流行过程中的作用及意义是什么?...
Wednesday, September 14, 2022
下列哪些疾病长计算病死率()。A、关节炎B、消化道溃疡C、流行性出血热D、结核病E、心肌梗死...
Sunday, May 5, 2024
Wednesday, September 14, 2022
Wednesday, September 14, 2022
Wednesday, September 14, 2022
Wednesday, September 14, 2022
Wednesday, September 14, 2022
自然因素和社会因素与疾病发生的关系中不正确的描述是:()。...
Wednesday, September 14, 2022
分层分析可减少:()。A、选择偏倚B、信息偏倚C、混杂偏倚D、失访偏倚E、测量偏倚...
Monday, June 5, 2023
下列分组标志或观测指标哪项属于队列研究:()。A、按患病与否分组B、按暴露与否分组C、观测指标为患病率D、观测指标为病死率...
Monday, January 9, 2023
从感染后至症状出现前能排出病原体的人属于:()。A、非典型病人B、潜伏期病原携带着C、恢复期病原携带者D、健康病原携带者E、所有带菌者...
Wednesday, December 28, 2022
Wednesday, September 14, 2022
某厂仪表制造工,工龄8年,近几个月常出现头痛、头昏、烦躁、易怒等...
Wednesday, September 14, 2022
在发病前三个月,虽末发病,但已存在各种潜在的危险因子,如血清胆固...
Wednesday, September 14, 2022