在“观察水的沸腾”实验中，当水温升到89℃时，小刚开始计时，每

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在“观察水的沸腾”实验中，当水温升到89℃时，小刚开始计时，每隔1min记录一次水的温度．然后，小刚根据实验数据绘制了如图所示的温度随时间变化的图象．

（1）由图象可以看出，把水从91℃加热到刚开始沸腾所需时间为 _________ min．

（2）根据图象可以推断，如果在其它条件不变的情况下继续对水加热1min，则水的温度是_________℃．

（3）根据沸点可知此地区的大气压 _________ 标准大气压．（选填：“高于或低于或等于”）

答案

（1）4

（2）99

（3）低于

判断题

旅客在乘车区间中，要求一段乘坐硬座车、一段乘坐软座车时，全程发售硬座客票，另收软座区间的软座票价。（）

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