患者，女，55岁。干咳少痰，咳声嘶哑，口干咽燥，神疲，消瘦，手足心热，舌红少苔，脉细数。治疗应首选

A．止嗽散

B．桑菊饮

C．桑杏汤

D．二陈汤

E．沙参麦冬汤

If a hydraulic pump on a winch accidentally stops while hoisting,the load will stay suspended because（）.

A.a check valve will close that prevents reverse circulation

B.a centrifugal counterweight counteracts the force of gravity

C.the electric pump motor cut out

D.the control lever will move to the stop position