【单选题】函数 的连续区间是 ( ) A . ; B . ; C . ; D . ;
A.
根据初等函数在其定义域内均连续,其连续区间也就是定义域, ln(x-1) ≠0, x-1>0, 即x ≠2,x>1, 故A不对
【多选题】在3个柱子和3个不同尺寸圆盘的梵塔难题中,初始问题(111)=>(333)规约为三个子问题是:
【单选题】(2013·郑州高中毕业班第一次质量预测)—Did you enjoy meeting your old schoolmates at the party last week? —Yes, I did. We ________ each other since we graduated from college.
【单选题】听力原文:Where is the last place you had the report? (A) She was the last person to submit the report. (B) I remember having it in my car. (C) Sorry, I don't remember what it said. (5)
【简答题】We think that your market report on ____________Friday last week is true.
【简答题】翻译: 我承认你说的, 他有天赋,但他不够努力。
【判断题】混凝土表层缺陷修补常用材科有混凝土材料、水泥砂浆材料、混凝土粘结剂和环氧树脂高分子粘结材料。