【单选题】The needle valve in a fuel valve will _____ when the fuel pressure action on the needle valve tapered face exerts a force lower than that of the spring compression.
【单选题】检测限与定量限的区别是( )
C.
检测限是以信噪比(2:1)来确定最低水平,而定量限是以信号噪比(3:1)来确定最低水平
D.
定量限规定的最低浓度应符合一定的精密度和准确度要求
【单选题】To maintain precise fuel metering, the fuel pressure regulator maintains a constant fuel ______.
【单选题】The fuel oil pressure and forced draught pressure should be matched to ensure good combustion with a full steady flameIn the sentence the word “match” means _____.
【单选题】检测限与定量限的区别是
C.
检测限是以信噪比(2:1)来确定最低水平,而定量限是以信号噪比(3:1)来确定最低水平
D.
定量限规定的最低浓度应符合一定的精密度和准确度要求
【单选题】The high pressure in fuel injection system of the diesel engine is produced by the _____.
【单选题】The high-pressure fuel opens the fuel valve and is sprayed into the cylinder in tiny droplets known as _____.
【单选题】以下哪项是超声诊断肝硬化失代偿期的主要依据