液压基本回路就是能够完成某种特定控制功能的（）和管件的组成。
参考答案：液压元件
The company promised to pay some money for the customers ____ their poor goods and ____ an
apology in public.[ ]
A. purchasing; making
B. purchasing; make
C. purchased; to make
D. to purchase; made
下列各项，不属于阴虚证表现的是（）
A.形体消瘦
B.少气乏力
C.口燥咽干
D.五心烦热
E.潮热颧红
