下列有关标底的叙述,错误的是( )。
A.标底应当保密
B.标底可作为分析报价是否合理的参考
C.标底不能成为评标的依据
D.国家鼓励招标前设标底
参考答案:D
It was in the factory _____ I worked when I was twenty _____ I met Linda who later became my wife. [ ]
A. that; where
B. where; that
C. that; that
D. where; where
投掷项目中运动员全身各部分动作的配合原理是什么?