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71. The lubricating oil system supporting the main propulsion reduction gear on the ship-docking tug to which you are assigned is fitted with a lube oil strainer as shown in the illustration. What strainer attribute will dictate the degree of filtration in terms of the particle size capable of being filtered
The degree of filtration in a disc-type lube oil strainer is determined by the vertical spacing between the discs, which is controlled by the thickness of the cleaner blades.
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