导致骨折延迟愈合的因素除外（）
A.血胆固醇过高
B.骨折处血液供应差
C.牵引过度
D.年老体弱
E.低蛋白血症
参考答案：A
---Thank God! The accident was avoided after all.
---That was lucky, but ten inches nearer and the two cars ________. [ ]
A. were destroyed
B. would be destroyed
C. would have been destroyed
D. had been destroyed
在业主方的项目管理工作中，( )是项目管理中的最重要的任务。
A．安全管理
B．成本管理
C．合同管理
D．质量控制
