已知抛物线的解析式为y=(x-2)2+3,则抛物线的顶点坐标为( ) A.(-2 发布时间:2017-05-08 21:41 │ 来源:www.tikuol.com 题型:选择题 问题: 已知抛物线的解析式为y=(x-2)2+3,则抛物线的顶点坐标为( )A.(-2,3)B.(2,3)C.(2,-3)D.(-2,-3)
题型:选择题 病历摘要:患儿,女性4岁,主因体检发现心脏杂音一周入院。PE:胸骨左缘第二肋间可闻及Ⅱ-Ⅲ级吹风样收缩期杂音,P2亢进伴分裂。心动图示房间膈缺损。低心排血量综合征是体外循环术后严重的并发症,治疗原则包括:()A.病因治疗B.辅助呼吸C.纠正水电解质紊乱和酸碱平衡D.胃肠减压E.辅助循环 查看答案
题型:选择题 ______children whose parents had died in the earthquake ____ sent to live with families in other cities.A.A great number of; wereB.A great number of; was C.The great number of; wereD.The great number of; was 查看答案