Check-up (Basics, Letters and numbers, Dates and times), Parts (Naming, Assembling, Ordering, Tools, Functions, Locations), Movement (Directions, Instructions, Actions), Flow (Heating system, Electrical circuit, Cooling system), Materials (Materials testing, Properties, Buying), Specifications (Dimensions, Quantities, Future projects), Reporting (Recent incidents, Damage and loss, Past events), Troubleshooting (Operation, Hotline, User guide), Safety (Rules and warnings, Safety hazards, Investigations), Cause and effect (Pistons and valves, Switches and relays, Rotors and turbines), Checking and confirming (Data, Instructions, Progress).
