02:16
Cálculo de IVA (Impuesto al Valor Agregado) - Calculation of VAT
01:54
Discount shopping calculation
01:17
Torque - unit conversion
01:32
kitchen units: liquid solid, temperature
01:47
Relay Code - ANSI - Electrical protections
01:18
Crane maneuver signals
01:38
Signals of Transport of Chemical Substances
01:21
Traffic signals - Peru
01:45
Mandatory and Warning Signs - Occupational Safety
01:29
Emergency and fire signs
01:21
Emergency signs - job security
01:16
Fire signs - occupational safety
01:28
Prohibition signs - Occupational safety
01:30
Mandatory signs - job security
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