Which of the files listed is tapered on three sides and is used to file acute internal angles?()
A、Mill
B、Round
C、Square
D、Triangular
Which of the files listed is tapered on three sides and is used to file acute internal angles?()
A、Mill
B、Round
C、Square
D、Triangular
Which one is NOT the ‘clear grounds’ for a more detailed inspection?()
A、absence of engine log book
B、serious corrosion on the hull
C、one page missing in the oil record book
D、paint peeling off some tailings in engine rooms
Late fuel injection in a diesel engine is indicated by low firing pressure with ()
A、low exhaust temperature
B、low exhaust pressure
C、mechanical knock in each cylinder
D、black or gray exhaust smoke
As its temperature rises, the volume of fuel oil in the tanks will ().
A、remain the same
B、increase
C、decrease
D、none of the above
The design of for a flash type evaporator is of critical importance because it must provide an optimum feedwater spray pattern that facilitates the flashing process, and it must also maintain a pressure differential between successive stages()
A、condenser
B、flashing device
C、lashing device
D、vacuum pump
Valve cages are used on some large diesel engines to ()
A、reduce wear on the valve stem
B、permit the use of alloy valve seat materials
C、reduce heat transfer from the valve seat
D、facilitate valve removal for servicing