水电工技能快速入门 - Tapa blanda

Plumbers skills Quick Start(Chinese Edition)

paperback. Condición: New. Language:Chinese.Paperback Pages Number: 320 This book is the beginning of the plumbers national occupational standards grade standards of the mid-level skilled workers and vocational skills certification specifications written. The book systematically introduces the basic knowledge of plumbers. construction of water supply and drainage. outdoor low voltage line construction. indoor electrical wiring. installation of lighting fixtures. and safe use of electricity basic common sense and so on. Nº de ref. del artículo: MY5404

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