题目：
某建设项目估计总投资为2800万元，项目建成后各年净收益为400万元，则该项目的静态投资回收期为( )年。
A．8.5
B．7
C．6
D．5
答案：
参考答案：B
某建设项目估计总投资为2800万元，项目建成后各年净收益为400万元，则该项目的静态
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