—Can I help you?
—______. [ ]
A. Here you are
B. No,I don't
C. Thank you
D. Yes, please
D
当绝对湿度不变时,温度越低,相对湿度越小。
只有种子类药材含有的特征是()
A.脂肪油
B.糊粉粒
C.淀粉粒
D.菊糖
E.挥发油