足值货币在与其他商品相交换时，是以自身所包括的( )同商品世界一切商品相交换的。
A．名义价值
B．实际价值
C．平均价值
D．信用量
参考答案：B
线段的中点只有______个，线段的五等分点有______个．
Developing the project schedule is often an iterative process. It determines the planned start and finish dates for project activities and milestones. Schedule development can require the review and revision of duration estimates and resource estimates to create an approved project schedule that can serve as a baseline to ______ progress.
A．analyze
B．track
C．level
D．extend
