哪一项不能作为确定胎位的标志（）
A.小囟门
B.大囟门
C.矢状缝
D.冠状缝
E.胎儿双耳
参考答案：D
There are a lot of useful things on the Internet, but________,there is something unhealthy on it. [ ]
A. by the time
B. at the same time
C. all the time
据资金时间价值的概念可知，(p/A，i，n)。()=l。
A.(A/p，i，n)
B.(f/A，i，n)
C.(p/f，i，n)
D.(A/f，i，，1)
