由江淮汽车公司自主研发和量产的、荣获“中国心”十佳发动机称号的VVT发动机，在国内处于领先水平、在国际处于先进水平．VVT发动机工作时，_1冲程使汽车获得了动力；若VVT发动机的能量流向如图所示，则热_刷题宝

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由江淮汽车公司自主研发和量产的、荣获“中国心”十佳发动机称号的VVT发动机，在国内处于领先水平、在国际处于先进水平．VVT发动机工作时，____冲程使汽车获得了动力；若VVT发动机的能量流向如图所示，则热机效率是____．

上一题下一题 0.0难度选择题更新时间:2018-09-10 07:39:27

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做功,30%

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