Engine : Motor Plants and Auxiliary Boilers - 1470/947
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| Telescopic pipes which are attached to water cooled pistons of large, slow-speed, main propulsion diesel engines are designed to ________. |
| A) overcome excessive crankcase pressure |
| B) prevent excessive lube oil temperature |
| C) allow piston cooling water to efficiently enter the piston despite its reciprocating piston motion without contaminating the engine lube oil |
| D) prevent contamination of the cylinder cooling water with engine lube oil |
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