硝酸钾是重要的农用化肥，也是制造黑火药的原料之一．在某一温度下加热硝酸钾产生了亚硝酸钾（KNO₂），同时还产生了一种气体，其化学方程式为2KNO₃ 2KNO₂+        ．

下列变化中不属于分解反应的是

根据句意及所给中文提示或英文解释，写出句中所缺单词，每空限填一个单词。
People like travelling in ____ (春天) because it is neither too hot nor too cold.
—What's your father's ____  (职业)?—He is a doctor.
The 30^th Olympic Games will be held in London, the ____ (首都) of England.
Lucy is polite and ____ (乐于助人的). We all like her.
Our maths teacher asked you to go to his office____  (立即). He is waiting for you.
Colours can change our moods and some may make us feel ____ _ (in need of sleep).
Hurry up, or we can't____  (arrive at) the railway station on time.

通常用量筒直接测量的物理量是（　　）

用单位正方块搭一个几何体，使它的主视图和俯视图如右图所示，则该几何体的体积的最小值与最大值分别为（  ）