若(x+y)2=25,(x-y)2=1,x2+y2的值是______. 发布时间:2017-05-15 01:44 │ 来源:www.tikuol.com 题型:填空题 问题: 若(x+y)2=25,(x-y)2=1,x2+y2的值是______.
题型:填空题 I have been searching for a painting to decorate my room, but ________ seems really difficult for me to find ________ I like. [ ]A. that; one B. it; it C. that; it D. it; one 查看答案
题型:填空题 有关遥感应用的叙述不正确的是( )。A.探测的范围大,能动态反映事物的变化B.用途广,可广泛用于农业、林业、地质、海洋、气象、测绘、环境保护、军事等多种领域C.获得资料的速度快、周期短D.它需要运用24颗人造卫星才能快速、准确地完成各项任务 查看答案