大黄牡丹汤中配伍大黄的意义在于
A．泻肠中湿热瘀结之毒
B．泻下通便，荡涤肠胃
C．清热泻火止血
D．生肌敛疮
E．清热解毒消肿
参考答案：A
Is Jim at home by himself? No, there's another boy with him. [ ]
A. playing
B. play
C. plays
D. to play
等焓加湿过程中空气状态发生变化，以下说法（）正确。
A．比焓不变
B．相对湿度减少
C．含湿量增加
D．比焓增加
E．温度下降
