依据华电集团《反违章管理指导意见》，反作业性违章工作重点是什么？
Distress flares and smoke signals for small passenger vessels（）. ["are not required aboard vessels on runs of less than 30 minutes duration","must be Coast Guard approved and stowed in a portable，watertight container","must be marked with an expiration date not more than 42 months from the date of manufacture","All of the above"]
现代农业的内涵分为哪三个领域来表述（）。 ["产前领域","产中领域","产后领域","产旁领域"]
地膜覆盖的方式及运用地膜覆盖的方式很多，常见的有（）。 ["高畦覆盖高畦覆盖","沟畦覆盖沟畦覆盖","小拱棚覆盖","低畦覆盖高畦覆盖"]
依据华电集团《反违章管理指导意见》，作业性违章的责任主体是哪些人？
试述安装接线图中相对编号法的表示方法？
