地榆的功效是()
A.凉血止血,理气止痛
B.凉血止血,散瘀解毒消痈
C.凉血止血,清肝泻火
D.凉血止血,化痰止咳
E.凉血止血,解毒敛疮
参考答案:E
在pH为1.5的溶液中,细菌带()电荷;在pH为()的溶液中,细菌带负电荷。
()I understand what you say, I can't agree with you
A.While
B.When
C.As
D.If