The fuel pump of a programmed fuel injection (PFI) system operate for two seconds when the ignition is turned to the start position to

enable the pump's fault diagnosis function to operate

warm up and lubricate the pump

supply a large amount of fuel and thereby create a choke effect

pressurize the fuel system before the engine is started

a battery, a starter, and an ignition switch

a battery, a distributor, and an ignition switch

a battery, a starter, and a distributor

a distributor, a starter, and an ignition switch

chain drive

gear drive

flat belt drive

V- belt drive

step up current

step down current

step up voltage

step down voltage

makes chemicals by mechanical means

uses chemical action to provide electricity

has curved plates instead of flat plates

does not use an electrolyte