A.angularity of the piston motion
B.inertia moment from the piston
C.centerline of the cylinder
D.centerline of the king pin
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A.Worn intake valve guides
B.Pitted pre-combustion chambers
C.Loose valve tappets
D.High exhaust back pressure
A.fuel knock
B.increased power
C.low compression pressure
D.high exhaust temperature
A crankshaft whose center of gravity coincides with its center line is said to be（）
Ⅰ.statically balanced
Ⅱ.dynamically balanced
A.Ⅰ only
B.Ⅱ only
C.both Ⅰ and Ⅱ
D.neither Ⅰ nor Ⅱ
In a trunk type diesel engine piston, the thickness of the head or crown is determined by the（）
Ⅰ.statically balanced
Ⅱ.heat dissipation requirement
A.Ⅰ only
B.Ⅱ only
C.both Ⅰ and Ⅱ
D.neither Ⅰ nor Ⅱ
A condition contributing to diesel engine piston rings sticking in the ring grooves, is insufficient ring clearance at the ring（）
Ⅰ.gap
Ⅱ.side
A.Ⅰonly
B.Ⅱ only
C.both Ⅰ and Ⅱ
D.neither Ⅰ nor Ⅱ
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（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
Diesel engine air start system check valves are opened by （）
Using a file without a handle may result in （）
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Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
（） is not installed on the main switchboar.
To proceed to the assistance of a ship in distress is（）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
Flame failure in an automatically fired auxiliary boiler can from a/an （）
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