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