The removal of （） from lubricating oil will reduce engine wear and possible breakdowns.
The film of oil between the rings and the liner is not only essential for the lubrication but also plays an important part in achieving （）.
Which of the listed cylinder liner surface conditions indicates proper lubrication?（）
The main function of the lubrication system in to enable （） of a film of oil between the moving parts.
To receive oil residues from the purification of fuel and lubricating oils in the machinery spaces, what kind of tank(s) should be provided on board?（）
Large marine diesel engines of crosshead construction generally have two systems of lubrication: a total loss system feeding the （） and a recirculation system lubricating the running gear and cooling the piston.
Passages are drilled in the crankshafts of diesel engines to provide lubricating oil to the （）.
In a normally operating diesel engine, the main cause of lubricating oil contamination in the crankcase is a result of the （）.
An excessive amount of water is prevented from entering a vessel using a water lubricated stern tube bearing by the use of the （）.
（）diesel engines generally have two systems of lubrication:（）a total loss system feeding and a circulating system lubricating the running gear and cooling the pistons.
The amount of lubricating oil in the drain tank should be checked by （）.
The pour point of lubricating oils is affected the most by which of the following?（）
The film of oil between the rings and the liner is not only essential for the lubrication but also （） achieving a gas seal.
One characteristic of a lubricating oil adversely affecting the result of centrifuging is （）
Which of the following statements is correct concerning the viscosity of lubricating oil?（）
The temperature difference between the inlet and outlet temperature of the lube oil cooler in the lubricating system for the diesel engine is generally between （）.
Which of the following statements concerning the lubrication of diesel propulsion engines used in vessels over 300 gross tons is most accurate?（）
The successful operation of any engine or machine and （） depend on effective lubrication.
Lubricating oil systems for diesel engine journal bearings are usually lubricated by which of the following types of lubricating oil systems?（）
The following options are all the functions of lubricating oil except（）
Oil is supplied to the cylinder wall and （） by means of mechanical lubricators.
The purpose of treating the cooling water of the diesel engine is to（） Ⅰ. resist the scale formation in the cooling chamber Ⅱ.lubricate the engine part Ⅲ.increase thermal capacity Ⅳ.resist corrosion
Excessive circulation of the lubricating oil with the refrigerant in a refrigeration system will cause______.
The key functions of lubricants include （).
