哪部医著提出了"五善七恶"
A.《诸病源候论》
B.《圣济总录》
C.《太平圣惠方》
D.《外科全生集》
E.《外科理例》
参考答案:B
She is very dear to us.We have been prepared to do ________ it takes to save her life.
A.whichever
B.however
C.whatever
D.whoever
供暖系统由热源、输热管道和( )等三部分组成。
A.循环泵 B.换热器 C.锅炉 D.散热器