举一反三
- Some diesel engines are fitted with a thermometer in the cooling water outlet from each cylinderIf the cooling water temperature from all cylinders begins to rise above normal, you should suspect （） A: increase blow-by in all cylinders B: incomplete combustion in all cylinder C: overloading in all cylinders D: insufficient fuel delivery to all cylinder
- The cylinder jacket cooling water after leaving_______passes to the jacket water cooler and[br][/br]then into the jacket water circulating pumps. A: the jacket water coole B: the expansion tank C: the heat exchange D: the engine
- Temperature control valves installed in the jacket cooling water system of a diesel engine modulates the rate of water flow through the （）.
- The volume of the water flow and the change in _____ from one point to another determine the amount of available energy in moving water.( ) A: water flow B: fall C: water speed D: elevation
- The volume of the water flow and the change in _____ from one point to another determine the amount of available energy in moving water.
内容
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Piston cooling fins are located ______. A: at top the piston crown B: beneath the piston crown C: at the base of the piston skirt D: inside the cylinder liner<br/>cooling water jacket
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（） is used for cylinder and cylinder head， the salt water is used for cooling the lubricating oil， the fresh water in the coolers and the charging air in the air cooler.
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Fresh water is used for the cooling of cylinder jackets and （） of the marine diesel engine.
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The most serious effect of air trapped in a diesel engine jacket water cooling system is that it（）.
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We drop a piece of metal into a jar full of water. The metal will float if it weighs less than A: an equal amount of gold B: the water that leave the jar C: all the water in the jar D: an equal amount of wood