在寒冷的冬天,结冰的衣服也会晾干,这是因为______直接变成了______.
冬天,结冰的湿衣服也能晾干,说明固态的冰能直接变成水蒸气,是一种升华现象.
故答案为:冰;水蒸气.
根据句意及所给提示完成单词
小题1:There are five _______(百万)people in this city.
小题2:You can’t go ____________(穿过) the street until the lights are green.
小题3:Mr. LI is drawing a __________ line on the blackboard with a ruler.
小题4:It’s too noisy here. Let’s find a _________( with little or no sound) place to read the books on the sea.
小题5:We can take different ___________(ways to go from one place to another) to the park.
烟气量增大的同时,即二氧化硫总流量增大,脱硫负荷增大,脱硫率()
A.不确定
B.不变
C.上升
D.下降