单项选择题
A.temperature in the space being cooled
B.liquid refrigerant pressure at the solenoid valve
C.pressure drop across the evaporator coils
D.refrigerant gas superheat at the coil outlet
单项选择题 When transmitted by a reduction gear, diesel engine speed is reduced and the torque available for work （）
单项选择题 Pitting in the area close to the pitch line and on the same end of each gear tooth of a reduction gear unit would be caused by （）
单项选择题 When used with reversing reduction gears, medium-speed diesel engines should be bolted to their foundations with fitted bolts at the drive end and clearance(loosely fitted) bolts in other locations √This is done to （）