在项目的施工过程中，需按( )原理对实际施工成本的发生过程进行有效控制。
A．动态控制
B．成本优化
C．主动控制
D．全面控制
参考答案：A
Mary is by no means learned; nor is she good at any practical trade. The only asset she possesses is her beauty.()
A. something valuable
B. temptation
C. something pleasing to the eye
D. womanly virtue
置换价
