A: carbohydrate
B: reproduction
C: starting system
D: fermentation
举一反三
- The purposes of the _____ are to remove excess heat , to keep the engine operating and to warm up the engine A: engine lubrication system B: engine cooling system C: crank mechanism D: valve train
- Diesel engine air start system check valves are opened by （） A: an air start cam B: cylinder compression pressure C: starting air pressure D: valve spring
- Engine system includes __________________, starting system, __________________ cooling system, fuel supply system, crank-connection rod mechanism and __________________.
- If a crankcase explosion occurs in a diesel engine, you should stop the engine and（） A: immediately open all crankcase relief ports B: increase crankcase exhauster speed to draw cool air into the engine C: allow the engine to cool naturally D: increase crank case scavenge air to remove unburned gase
- A heater in the circuit facilitates warning of the engine prior to （） by circulating hot water. A: starting B: stopping C: to start D: to sto
内容
- 0
Which of the following statements describes the function of an expansion tank in a diesel engine cooling system?（）
- 1
In the fuel supply system of marine diesel engine, the displacement of the supply pump should be _____ the fuel consumption of the main engine to ensure that the main engine can get enough fuel supply. A: more than B: equal to C: less than D: AorBorC
- 2
再次启动发动机前，清除地面燃油。 A: Remove the fuel from the ground before you try to start the engine again. B: Remove the fuel from the ground before you try to start the engine one more time. C: Remove fuel from ground before attempting another start. D: Remove the fuel from the ground before you try to repeat the start of the engine repeat.
- 3
The purpose of the engine's cooling system is to remove excess heat from the engine, to keep the engine operating at its most efficient temperature,and to get the engine up to the correct temperature as soon as possible after starting.
- 4
Burning fuel with a high sulfur content in a diesel engine will （） A: increase thermal efficiency B: cause clogging of the fuel system C: increase the ability of the engine to start in cold weather D: produce corrosion in the cylinder and exhaust system at low load