The humidifier’s valve of air-conditio

1、If the compensating needle valve of a

If the compensating needle valve of a hydraulic governor is opened more than necessary the governor will （）Ahave a larger than normal dead b...

2、The humidifier’s valve of air-conditio

The humidifier’s valve of air-condition should be （）, when the temperature is lower than 0℃.AA.decreasedBB.increasedCC.fixedDD.closed

3、Bad valves operation of the reciprocat

Bad valves operation of the reciprocating air compressors can be detected by observation of （）.Athe discharge temperature lowBthe discharge temperature highCthe discharge pressure riseDthe inter-stage pressure low

4、The series of valves used to control t

The series of valves used to control the return flow in well control operations is called the（）.Avalve assemblyBstandpipe manifoldCaccumulator manifoldDchoke manifold

5、The valve on the discharge side of a c

The valve on the discharge side of a cargo pump on a tanker will usually be a（）.Abutterfly valveBspectacle valveCcheck valveDglobe valve

6、The purpose of the purge valve at the

The purpose of the purge valve at the top of the condenser in a refrigerating system is to（）Aremove any air that may accumulate in the sys...