单选题With() the engine need not to be aligned with reduction gears or propeller shaft.ADiesel engine propulsionBDiesel electric propulsionCSteam engine propulsionDGas turbine propulsion
单选题
With() the engine need not to be aligned with reduction gears or propeller shaft.
A
Diesel engine propulsion
B
Diesel electric propulsion
C
Steam engine propulsion
D
Gas turbine propulsion
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Pitted reduction gear teeth having a deep blue color with evidence of overheating have been operated with _______.A.excessive speedB.improper warm-upC.extreme misalignmentD.inadequate lubrication
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