A:10,5,32,6,7,9,17,24,4
B:10,5,32,6,7,9,4,17,24
C:10,5,32,4,6,7,9,17,24
D:4,10,5,32,6,7, 9,17,24
为鉴别氢气、氧气、二氧化碳三瓶气体,可选用的方法是()
Before entering the room,I was asked to show the soldier the________ of my suitcase.