Engine_2014 : Motor Plants and Auxiliary Boilers - 461/2614
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| If clearance between a piston and the cylinder wall is excessive, piston slap will occur. The slap itself is caused by __________ . |
| A) alternation of side thrust |
| B) a breakdown of the lube oil film on the cylinder wall |
| C) worn piston boss piston pin bearings |
| D) fluctuating gas pressure in the combustion space |
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