带锯机上的重锤是自动平衡锯条张紧力的装置，重锤的质量适中与否，直接影响锯材的质量和锯

—I don't know _______ now.

—She is much better today. [ ]

A. how is she

B. where is she

C. how she is

D. where she is

Having worked as a doctor for so many years, Mr. White has________rich experience in battling with various diseases.

A．accumulated

B．reserved

C．increased

D．developed

放线菌孢子形成的方式可归纳为哪几种？

架空线路夏季易发生哪些事故？如何防止？

痰热互结，症见胸脘痞闷，按之则痛，舌苔黄腻，脉滑数者，治宜选用（）

A.清气化痰丸

B.贝母瓜蒌散

C.小陷胸汤

D.泻白散

E.瓜蒌薤白汤