The air supplied to the cylinders by a turbocharger is often reduced in volume by a/an （）

A.Loss of engine power and high exhaust temperatures
B.Higher than normal firing pressure and low exhaust temperatures
C.High fuel consumption and high exhaust temperatures
D.Lower than normal compression pressure and high exhaust temperature

A.ignition may be delayed
B.fuel economy is not affected
C.exhaust gas temperature will be unchanged
D.the exhaust will be clear

A.reduce the turbocharger operating temperature
B.increase the pressure of the inlet air
C.increase the density of the inter air
D.reduce the blower operating temperature