1.1 Pipes and fittings used in water supply and drainage.mp4+ 1.2 Water supply and drainage commonly used accessories and equipment.mp4+ 1.3 Building water supply system composition.mp4+ 1.4 Domestic drainage system composition.mp4+ 1.5 Domestic water supply system installation.mp4+ 1.6 Domestic drainage system installation.mp4+ 2.1 Basic knowledge of electricity.mp4+ 2.2 Power distribution system overview.mp4+ 2.3 Composition of electrical lighting system.mp4+ 2.4 Installation of indoor electrical lighting system.mp4+ 2.5 Building lightning protection grounding system.mp4+ 2.6 Telephone system, network system.mp4+ 2.7 Cable television system.mp4+ 3.1 Indoor hydrant water supply system.mp4+ 3.2 Installation of indoor hydrant water supply system.mp4+ 3.3 Automatic sprinkler system composition.mp4+ 3.4 Classification of automatic sprinkler systems.mp4+ 3.5 Overview of automatic fire alarm system.mp4+ 3.6 Fire detection and alarm system.mp4+ 3.7 Fire linkage control system.mp4+