【赛点聚焦】分子动理论,内能及改变,热量,热值,比热容,热机及其效率.【赛题讲析】赛题1某物体的温度升高,则().A.该物体一定与外界发生了热传递B.外界一定对该物体做了功C.该物体可能向外界放出了热,或对外做了功D.该物体分子运动加剧,内能增加讲析温度高反映了物体内部分子做 [Spot Focus] Molecular dynamics theory, internal energy and change, heat, calorific value, specific heat capacity, heat engine and its efficiency. [Sample analysis] Problem 1 The temperature of an object increases, then (). A. The object Must have heat transfer with the outside world B. The outside world must have performed work on the object. C. The object may have released heat to the outside world, or did work outside. D. The molecular motion of the object is intensified, and the internal energy increases the temperature of the analysis. The internal molecules of the object do