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【单选题】
The duration optimization of the project network plan is through ( )A.
Change the logical relation between the key work to make the calculated duration meet the requirement
B.
Change the logical relation between the key work to make the planned duration meet the requirement
C.
Compress the duration of key work to make the required duration meet the planned duration
D.
Compress the duration of key work to make the calculated duration meet the required duration
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【单选题】在财政法的体系中处于核心地位的是（ ）。
A.
政府采购法律制度
B.
预算法律制度
C.
国库集中收付制度
D.
税收征收管理法规制度 $amp>amp>amp>amp>amp$gt