Relacionar Columnas Talking About FunctionsVersión en línea Matching por Logos Sprachinstitut 1 The purpose of the wheel is to steer the truck. 2 The function of the switch is to turn the machine on and off. 3 The purpose of the backup file is to keep our data safe. 4 The shelf is bolted to the wall with screws. 5 The vehicle is powered by the engine. 6 The bridge is supported by steel pylons. 7 The airflow is regulated by the valve. The switch turns the machine on and off. The backup file keeps our data safe. The wheel steers the truck. Steel pylons support the bridge. The valve regulates the airflow. The engine powers the vehicle. Screws bolt the shelf to the wall.
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