Engine: Expired / Motor Plants and Auxiliary Boilers

1. A level type explosimeter, for small medium speed, trunk piston type engines
2. B rotary type mist detector, designed for use in four-stroke, high speed diesel engines
3. C comparator type mist detector for large low speed, crosshead type engines
4. D photo-electric, explosive gas indicator, for use in high speed, two-stroke, trunk type piston engines

Tip: press A-D to answer