当温度一定时，增高压力则气相中二氧化碳分压会增加，有利于吸收。
参考答案：对
I always look _____ those who never look _____ others, even though they have achieved great
achievements. [ ]
A. down on; up to
B. down upon; up to
C. forward to; down on
D. up to; down on
1990年上海8种上市股票的股权结构
1990年，上海8种上市股票中，个人股占（）。
A．1/4弱
B．1/4强
C．1/3强
D．1/2强
. up to; down on 