（）是评估发动机经济性的主要指标。
A、耗油率
B、最低工作转速
C、最低怠速转速
D、最大功率
参考答案：A
—Shanghai is really a beautiful city and there are many places of interest.
—So it is. Why not _______ here for a long time?
A. stay B to stay C. staying D. stays
肺胀，症见心悸，喘咳，面浮，肢肿，面唇青紫，尿少，怕冷，苔白滑，脉沉细者，方选（）
A.真武汤合五苓散
B.金匮肾气丸
C.养心汤
D.猪苓汤
E.香砂六君子汤
