蒸发排管内有()时,会使霜结得不完全。
参考答案:积油
Tom is ______ boy . [ ]
A. a 18-year-old
B. an 18 years old
C. a 18 years old
D. an 18-year-old
真武汤中配伍芍药的用意,与下列哪项无关()
A.利小便去水气
B.缓肝急止腹痛
C.滋阴养血柔肝
D.缓解筋肉动
E.防止温燥伤阴