顺次连结对角线垂直且相等的四边形各边中点所得四边形是A.平行四边形 B.矩形 C 发布时间:2017-04-27 00:39 │ 来源:www.tikuol.com 题型:选择题 问题: 顺次连结对角线垂直且相等的四边形各边中点所得四边形是A.平行四边形 B.矩形 C.菱形 D.正方形
题型:选择题 According to the Bureau of the Census, what is an urban area A.A chain of adjacent cities.B.An area with at least 50,000 people.C.The 18 largest cities.D.An area with 2,500 people or more. 查看答案
题型:选择题 后牙固定桥修复时,为减少基牙负担,下列哪项措施是正确的A.减小桥体与牙槽嵴的接触面积B.减小桥体颊舌径C.减小桥体近远中径D.减小桥体与对牙合牙的接触关系E.增加桥体龈端与牙槽嵴的接触面积 查看答案