— I don't feel very well today. I've got a pain here.
A:Can I take your temperature
B:What's wrong with you
C:Do you have a cough
D:How long have you been like this
胆矾和石膏在不同温度下的溶解度(g/100g水)见表.
温度(℃)
20
40
60
80
100
石膏
0.32
0.26
0.15
0.11
0.07
胆矾
32
44.6
61.8
83.8
114
请回答下列问题:
下列哪项不是种子萌发所必需的( )
阅读我国东北地区图,完成下面小题
abc >0;②a-b+c=0;③2a+c<0;④a+b<0,其中所有正确的结论是( )