治疗阴虚火旺无汗骨蒸的药物是（）。
A.知母
B.黄连
C.牡丹皮
D.地骨皮
E.桑白皮
参考答案：C
— Thanks a lot, Mr. Wang. I don't know how to ________ the help you gave me during my stay here.
— It's my pleasure. Welcome to China again when you have time. [ ]
A. pay off
B. pay back
C. pay for
D. pay to
分部分项工程量消单项目设置五级编码，其中第五级编码（）顺序码。
A.专业工程
B.分部工程
C.分项工程
D.工程量清单项目
