一、填空题 1.干木柴的燃烧值是1.2×10~7焦/千克,它表示____.若要获得3.6×10~7焦的热量,需要完全燃烧___千克的干木柴. 2.内能的主要应用有___和___.热机就是利用内能来___的机器. 3.汽油机和柴油机是由____、__、___和___四个冲程不断循环而连续工 First, fill in the blank 1. Burning firewood value is 1.2 × 10 ~ 7 coke / kg, which said ____. To get 3.6 × 10 ~ 7 coke calories, you need to fully burn ___ kilograms of dry wood. . The main application of internal energy ___ and ___. Heat machine is to use the internal energy to ___ machine. 3. Gasoline engine and diesel engine by ____, __, ___ and ___ four continuous cycle and Continuous work