The working cycle of a four-stroke diesel engine consists of four events:（）
(1) compression
(2) expansion
(3) exhaust
(4) suctionThe correct sequence is
A.(4)-(2)-(3)-(1)
B.(4)-(3)-(1)-(2)
C.(4)-(3)-(2)-(1)
D.(4)-(1)-(2)-(3)
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A.precautions
B.rpm
C.indicator cards
D.B and C
A.repair list
B.spare parts order list
C.price list
D.bunker list
A.correct maneuvering
B.wear
C.working efficiency
D.maintenance
A.friction
B.collision
C.inertia
D.resistance
A.in order that
B.because of
C.in order to
D.owing to
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