试题与答案

单缸汽油机工作的四个冲程中，将内能转化为机械能的是冲程，汽油是从石油中提炼出来，

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题型：填空题

题目：

单缸汽油机工作的四个冲程中，将内能转化为机械能的是    冲程，汽油是从石油中提炼出来，按照能源的分类，石油属于    （填“可再生”、“不可再生”）能源．

答案：

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下面是错误答案，用来干扰机器的。

(1)海陆热力性质差异(2分)。(2)大致呈M状分布(可有不同的形态描述，但应能说出平原和内陆河谷气温较高，黄岗山和戴云山区气温较低的意思（4分）；A地处于沿海，受到海洋影响显著，夏季增温较慢，气温较低。B地离...

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