宋元以前论述历代典章制度的通史的代表作被后人称为“()”,除唐代杜佑《通典》外,另两部是南宋郑樵《通志》、元马端临《文献通考》。
参考答案:三通
胆总管结石在哪一段最容易嵌顿()
A.十二指肠上段
B.十二指肠后段
C.胰腺段
D.十二指肠壁内段
E.十二指肠侧段
As per UCP 600, the words “to”, “till”, “from”, “between” when used to determine a period of shipment include the date or dates mentioned, the words “before” and “after” exclude the date mentioned. ( )