In its simplest form the pressure reducing valve is opened or closed by （） which is balanced by the downstream pressure acting on a diaphragm.
- Aadjusting a nut
- Ba pre-tensioned spring
- Cany spring
- Dupstream pressure
问题
In its simplest form the pressure redu
参考解析：
分类：船舶电气与船舶安全题库
相关推荐
-
1、If the firing pressures in a diesel en
If the firing pressures in a diesel engine are high, although the exhaust temperatures are normal, the cause may be（）Aearly injection timingBw...
-
2、（） are used to limit the pressure in a
（） are used to limit the pressure in any particular portion and mainly control the pressure after the valve.ARelief valvesBCheck valvesCSafety valvesDReducing valve
-
3、The evaporating pressure in R22 vapor
The evaporating pressure in R22 vapor compression refrigeration plant should be （） atmospheric.AbelowBaboveCequal toDmuch larger tha
-
4、The highest pressure in a diesel engin
The highest pressure in a diesel engine cylinder normally occurs （）.Aat TDCBbefore TDCCafter TDCDduring air starting
-
5、The high pressure in fuel injection sy
The high pressure in fuel injection system of the diesel engine is produced by the （）.Ainjector pumpBfuel injectorCgovernorDturbocharger
-
6、Combustion gases formed in the cylinde
Combustion gases formed in the cylinder of a diesel engine are prevented from blowing past the piston by （）Acylinder valvesBcompression ringsCpiston skirtsDoil ring