A.because
B.though
C.since
D.until
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A.polished
B.renewed
C.adjusted
D.ground
A.MIP
B.MCR
C.MEP
D.BHP
A.stop
B.start
C.speed up
D.slow down
A.decreased；opened
B.decreased；shut
C.increased；opened
D.increased；shut
A.stop engine
B.finished with engine
C.dead slow ahead
D.dead slow astern
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When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish
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