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
严禁在加油(气)站内吸烟、在爆炸危险区域接打手机、使用非防爆照明器材和()。
进行磨石工程时应防止草酸()。使用磨石机时,操作人员应戴绝缘手套,穿绝缘靴。