从事一类和二类汽车维修业务的经营者,配备的技术负责人员和质量检验人员总数的()应当经全国统一考试合格。
A.40%
B.50%
C.60%
D.70%
参考答案:C
---What do you think of Guo Degang?
---I like his cross talks because they are _____________
A sad B difficult C scary D fun
医院的中心任务是
A.教学
B.科研
C.计划生育
D.医疗
E.预防