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质量一定的理想气体，从相同状态出发，分别经历等温过程、等压过程和绝热过程，使其体积增加一倍．那么气体温度的改变(绝对值)在[]
A
绝热过程中最大，等压过程中最小．b.绝热过程中最大，等温过程中最小．c.等压过程中最大，绝热过程中最小．d.等压过程中最大，等温过程中最小．
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试题答案：
D
答案解释：
等温过程的温度的改变为零；根据等压过程的过程方程V/T=常量，等压过程体积增加一倍后温度也增大一倍；根据绝热过程的过程方程，体积增加一倍后气体温度下降。
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