第21题:[多选题] GIS局部放电超声波检测的安全要求有( )。 A. 检测至少由两人进行,并严格执行保证安全的组织措施和技术措施 B. 应确保操作人员及测试仪器与电力设备的带电部分保持足够的安全距离 C. 应熟悉设备结构,检测时避开设备防爆口或压力释放口 D. GIS进行操作时,允许检测人员在其外壳上进行短时工作 参考答案:ABC
第23题: [单项选择]Passage Three Questions 33 to 35 are based on the passage you have just heard. A. Having frequent meetings with their supporters. B. Winning public support by making speeches. C. Balancing government budget. D. Fighting corruption. 参考答案:B 答案解析:[听力原文] How do political candidates spend most of their time before elections