你可能感兴趣的试题
to reduce reducing reduce reduced
purge the condenser if the waterside is dirty check for proper water flow through the condenser increase the high pressure cutout setting reduce the cooling water flow
reduce engine exhaust noise reduce engine back pressure increase engine cycle efficiency increase turbocharger efficiency
reducing reduce to reduce reduced
increase reduce maintain constant None of the above is true
under high pressure under low pressure heated to reduce viscosity cooled to increase viscosity
maintain adequate coil back pressure prohibit flashing in the liquid line reduce refrigerant volume in the system reduce compressor discharge line loading
increase scavenge air pressure reduce fuel booster pump pressure adjust the fuel rack retard fuel injector timing
Ⅰ only Ⅱ only both ⅠandⅡ neither Ⅰnor Ⅱ
increase the flow of the cooling water through the condenser adjust the high pressure cutout to maintain the desired pressure open the hot gas bypass temporarily to reduce capacity purge non-condensable gases to reduce the excess pressure
reduce engine horsepower output aid in silencing the exhaust noise increase the mean effective pressure contribute to effective cylinder scavenging
reduce mean effective pressure decrease average compression pressure decrease air charge density increase power output
relieve excess fuel oil pressure during the “off ” fire cycle admit water to the dry pipe throttle the forced draft fan output for proper combustion reduce excess steam pressure in the boiler
to reduce reducing reduce reduced
reduce engine exhaust noise reduce engine back pressure recover heat which otherwise would be lost increase turbocharger efficiency
affect the injection pressure improve combustion reduce compression pressure decrease power output
reduce the engine driven fuel pump outlet pressure retard the fuel injector timing to reduce power increase the fuel rack setting reduce the load on the engine
reduce the turbocharger operating temperature increase the pressure of the inlet air increase the density of the inter air reduce the blower operating temperature
viscosity pressure resistance setting point
increase back pressure during the exhaust process facilitate periodic replacement of the valves reduce the pumping loss associated with scavenging reduce tension on valve springs