问题
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Diesel engine exhaust noise can be reduced in an exhaust muffler by ___.
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It can be inferred from the passage that in minimizing the damage caused by earthquakes at
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If an auxiliary diesel engine frequently stalls, the trouble may be caused by ___.A.low ex
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Ignition failure in an automatically controlled auxiliary boiler could be caused by .A.car
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Combustion knock occurring in a diesel engine can be caused by _____.A.excessive fuel pene
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In an operating diesel engine, pre-ignition can be caused by _____________.A.excessively l