Outdoor Work × Required Skills

Drain Installation (1) Drainage Channel Inspection and Cleaning (1) Drainage Construction (1) Drainage Equipment Inspection (1) Drainage Facility Construction (1) Drainage Pipe Jointing Construction (1) Drainage Pump Operation (1) Drainage and Ground Knowledge (1) Drawing Reading Ability (1) Dredging Construction (1) Dredging Machine Operation (1) Drill Core Machine Operation (1) Drill Driver Operation (1) Drill Work (1) Drilling Machinery Operation (1) Drilling Operation (1) Drilling Position Measurement Technique (1) Driving Instruction (1) Driving Operation (1) Driving Skills (Large Vehicles) (1) Drying Machine Operation (1) Drying Management (1) Drying Roasting Management (1) Drying and Anti-corrosion Processing (1) Drying and Humidity Control Technology (1) Drying and Preservation Techniques (1) Dump Truck Operation (1) Dust and Noise Control Measures (1) Dust and Noise Countermeasures (1) Earth Volume Calculation (1)