{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Overview and power transmission and distribution equipment of security laws and regulations departure substation equipment and environmental protection power system of basic theory and measured electrical workpiece first seed electrical worker course text","author_name":"","thumbnail_url":"https://www.ebooknetworking.net/books/488/948/big4889481427.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-4889481427.html\">Overview and power transmission and distribution equipment of security laws and regulations departure substation equipment and environmental protection power system of basic theory and measured electrical workpiece first seed electrical worker course text</a>","width":400,"height":300}