失业证在哪里办理？怎么办理？
参考答案：
失业证一般在户籍地街道劳动保障所或社区工作站办理。申请人携带身份证等资料前往办理。
AIDS is said _____ the biggest health to people in that area over the past few years. [ ]
A. that is
B. to be
C. that it has been
D. to have been
地球物理勘探作业前，导线铺设应避开高压输电线路；必须经过高压输电线路时，应有（）保护措施。在雷雨天气时，禁止进行野外（）勘探作业。
A.绝缘；电法
B.隔离；电法
C.隔离；化探
D.绝缘；化探
