A.of crosshead type
B.of trunk piston type
C.of low speed type
D.all the above
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A.end
B.web
C.pin
D.journal
A.sea cheat
B.air receiver
C.crankcase
D.water box
A.a worn cylinder
B.broken piston rings
C.either A or B
D.none of the above
A.a worn cylinder
B.broken piston rings
C.any of A and B
D.none of the above
Leaky exhaust valve will result in which of the following?（）
(1) high exhaust temperature;
(2) low compression pressure;
(3) low firing pressure.
A.(1) and (2)
B.(1) only
C.(2) only
D.(1),(2) and (3)
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