A.many thousand times
B.between times
C.one time
D.at times
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A.temperature
B.viscosity
C.density
D.velocity
A.excessive heat
B.insufficient heat
C.effective cooling
D.high output
A.scale
B.sludge
C.chemicals
D.air
A.turning gear
B.steering gear
C.spur gear
D.chain gear
A.the crosshead
B.the crankshaft
C.large end
D.the piston bosses
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To determine if the lube oil filter elements need changing, （）.
How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?（）
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In using reduction gears to obtain efficient propeller speeds, （）.