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问题 单项选择题

胎方位是指

A．最先进入骨盆入口的胎儿部分

B．胎儿先露部的指示点与母体骨盆的关系

C．胎体纵轴与母体纵轴的关系

D．胎儿身体各部的相互关系

E．以上都不是

答案

参考答案：B

改错题

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填空题

历史上有名的“官渡之战”中以少胜多的是（）
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