下列有关热和能的说法中正确的是 A.燃料的热值越大内燃机效率越高b.物体内能增大一定从外界吸收了热量c.汽油机工作时压缩冲程中内能最大 Template




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tomski下列有关热和能的说法中正确的是 a.燃料的热值越大内燃机效率越高b.物体内能增大一定从外界吸收了热量c.汽油机工作时压缩冲程中内能最大 coloring