I am afraid that his answer is _____ from correct.
A.
far
B.
free
C.
different
D.
short
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【单选题】Some medium and high-speed diesel engines require reduction gear units to provide a useful propeller speedIn most reduction gears, the bull gear ____.
A.
must churn the oil in the sump
B.
is connected to the propeller shaft
C.
is driven at the highest RPM
D.
compensates for alignment variations between the engine and pinion gear