要改变窗体上文本框控件的输出内容,应设置的属性是A.标题 B.查询条件 C.控件来源 发布时间:2017-05-20 21:00 │ 来源:www.tikuol.com 题型:单项选择题 问题: 要改变窗体上文本框控件的输出内容,应设置的属性是A.标题B.查询条件C.控件来源D.记录源
题型:单项选择题 选择意思正确的词组填入下列横线上。call up, take away, ran out of, look through, get along 1. The teacher ______________my mobile phone because I used it in class. 2. I need some money. I'm going to _____________ the newspaper for a holiday job. 3. Paul and I are good friends. We _______________ well because we both like sports. 4. I didn't finish writing my test because I ________________time.5. Let's _____________Joe and invite him to play tennis. 查看答案
题型:单项选择题 如图是制取蒸馏水的简易装置,在试管a中加入约1/3 容积的水和几片碎瓷片。将长玻璃导管c一端插入洁净的试管b 中,导管c末端距离试管b底部2cm~3cm。把试管b放入盛有冷水的烧杯d里。用酒精灯加热试管a中的水,加热至试管b 里有蒸馏水生成。回答下列问题: (1)烧杯d中冷水的作用是________________________;(2)加热a试管时,常加入几片碎瓷片的目的是________________________;(3)为什么要使用很长的一段玻璃导管c?___________________________;(4)用分子. 原子的知识解释制取蒸馏水与水电解过程的不同________________________。 查看答案