解吸系统如何升温、升压好?为什么?
参考答案:
①升温、升压同时进行;
②温度随压力逐渐提高;
③这样有利于系统的稳定控制。
--- Hi, Anne. Which of the two paintings on the wall do you prefer?
--- Actually I don’t like . Let’s take a look at other paintings.
A.both of them
B.none of them
C.neither of them
D.either of them
原子结构K层最多容纳的电子数是 ()
A.2个
B.8个
C.18个
D.32个
E.50个