矽肺的基本病理改变
A．肺组织弥漫性纤维增生B．肺组织纤维化和矽结节形成C．尘细胞形成细胞性结节D．结节融合形成团块E．矽结节透明性变
参考答案：B
A project management team has subcontracted work to a service company．Which of the following tools is the best choice to assure that this company will be able to meet the quality requirements of the project ？（）
A．Quality audi
B．Deliverable inspectio
C．Fixed price contrac
D．Service level agreemen
投保人向保险要约的证明通常是（）
A.保险单
B.保险凭证
C.投保单
D.风险调查表
