我
- A.splash method
- B.mechanical force feed lubricators
- C.detached sump method
- D.internal cooling passages in the crankshafts and connecting rods
- 5
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In a closed cooling water system, which of the problems can cause the water pressure to fluctuate?
- A.An open vent in the cooling system
- B.A fouled sea chest
- C.A restricted water passage in the engine
- D.Air entrained in the cooling water
- A.which
- B.when
- C.whose
- D.what
- A.fusion
- B.vaporization
- C.sublimation
- D.condensation
- A.fulfill
- B.eliminate
- C.grease
- D.bend
- A.amount of superheat in the vapor leaving the coil
- B.amount of superheat in the liquid
- C.temperature in the evaporator coils
- D.pressure in the evaporator coils
- A.too low starting air pressure
- B.main start valve closed
- C.neither A nor B
- D.A and B
- A.high cost of fuel
- B.serious fire hazard
- C.possibility of pollution
- D.poor combustion which will occur in that cylinder
- A.smoke
- B.rate of temperature rise
- C.ionized particles
- D.all of the above
- A.opposite polarity
- B.the same polarity
- C.negative polarity
- D.positive polarity
