[多选题]营销作业人员在变电站主控制室、高压室、开关箱等计量装置及其二次回路上，( )、压降测试、校验、调试等作业时，都应执行变电站、线路以及发电厂内作业的相关安全要求。
A.进行巡视
B.故障检修
C.装拆
D.负荷测试

Trade Unions
1. Some scholars have associated trade unions with the medieval craft guilds(中世纪的行会), but there are important differences between the two. The guild members were master craftsmen who owned capital and often employed workers. Unions are known as associations of workers with similar skills.
2. In the past, individual workers had no control over the conditions of their working lives; political and economic power was concentrated in the hands of wealthy business owners. Workers found, however, that there was strength in uniting. From their earliest years, union objectives have been higher wages and improved working conditions.
3. Employers resisted, of course. They made great efforts to stop union organizing its activities. Union members were fired, workers were forced to sign contracts in which they promised not to