水在汽化时,吸收汽化潜热,其温度()。
A、上升
B、下降
C、不变
D、无法判定
参考答案:C
根据汉语提示完成句子。
1. How much do the cards__________ (值)?
2. Millie gave an ___________ (有趣的) talk on "The Life of a trainer"
3. I'm_________ (担心) he is still at home.
4. I don't have___________ (足够的) money to buy a car.
5. __________ (最后), Tom went home with his dog.
6. Can I take a __________ (口信) to him?
氧传感器一般安装在()管中。
A、进气管
B、排气管
C、冷却水