港口与航道工程施工总承包二级资质企业，具有二级资质以上项目经理不少于（）人。
A.10
B.15
C.20
D.25
参考答案：A
In relation to the Securities Law of China:
(c) state the various legal liabilities of a sponsor, in providing professional services, for his wrong doings or failure to perform his functions. (6 marks)
清气与水谷之气结合关系到
A．元气的生成B．宗气的生成C．营气的生成D．卫气的生成E．中气的生成
