If the detergent type lubricating oil being used in a diesel engine is black, the oil （）
The lubricating system for the cylinder walls is different from the bearings in that the oil for former one is supplied in （） while that for latter one is （）.
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 （）.
The term "pour point" is defined as the lowest temperature at which lubricating oils will flow （）.
Which lubricating oil additive is used in diesel engines to reduce the tendency for sludge and varnish to form on the engine parts?（）
The （）pump is usually used as the lubricating oil pump.
In a normally operating diesel engine, the main cause of lubricating oil contamination in the crankcase is a result of the （）.
The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its （）.
The amount of lubricating oil in the drain tank should be checked by （）.
An important consideration in selecting a lubricating oil for use in a refrigeration compressor is for the oil to （）
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 of function of diesel engine lubricating oil is to （）
There should be a lubricating oil （） between the main beatings and the crankshaft.
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 （）.
The cylinder oil is pumped into the cylinder (via non-return valves) when the piston rings pass the lubricating orifices during （）
Lubricating oil is supplied to the crank-pin bearings in a marine diesel engine by （）.
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（）
The connecting rod large end bearing shell generally has tags for location and oil grooves round the center of its axial length which correspond with grooves in the （） through which oil is transmitted up the rod to lubricate the small end.
Oil is supplied to the cylinder wall and （） by means of mechanical lubricators.
（） that everything in the engine crankcase is correct, start up the crankcase lubricating oil pump.
