The cost reserve should be ______ .

A) hidden to prevent management from disallowing the reserve
B) added to each task to prevent the customer from knowing that a reserve exists
C) maintained by management to cover cost overruns
D) added to the base costs of the project to account for risks

可并发肺肉质变的肺部疾病是（）

A.间质性肺炎

B.肺脓肿

C.支气管肺炎

D.大叶性肺炎

E.慢性支气管炎