汽轮机冷态启动和增负荷过程中，转子膨胀（）汽缸膨胀，相对膨胀差出现（）增加。
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The flash point of a liquid refers to the temperature （）
A. at which a liquid will give off inflammable vapors
B. at which a liquid will burn steadily
C. at which a liquid will explode
D. that a liquid must reach before it will flow readily
邻二甲苯氧化生成苯酐的主副反应都是强烈的放热反应。
A. 正确
B. 错误
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