软药
参考答案：
指本身具有活性的药物，在体内产生药理作用后可按预知方式和可控速率经代谢转化成无活性的产物。
鼓胀之瘀结水留证的主症有（）
A.胁下瘕结痛如针刺
B.腹大胀满，按之如囊裹水
C.脘腹坚满，青筋显露
D.胁下胀满疼痛
E.面色晦暗黧黑
A tide is called diurnal when（）.
A.only one high and one low water occur during a lunar day
B.the high tide is higher and the low tide is lower than usual
C.the high tide and low tide are exactly six hours apart
D.two high tides occur during a lunar day
