一定量的气体，在体积膨胀并对外做功的过程中（ ） A．气体的密度一定减小 B．气 发布时间：2017-07-18 17:49 │ 来源：www.tikuol.com 题型：选择题 问题： 一定量的气体，在体积膨胀并对外做功的过程中（ ）A．气体的密度一定减小B．气体的压强一定减小C．气体一定从外界吸收热量D．气体分子的平均动能一定减小
题型：选择题 阅读理解。 Go Shopping Centre Sale! (Nov. 7～Nov. 21) 1. Free Soft Drink Buy any meal for more than $6 at Mike's Cafe, and get a free soft drink. We have the best snacks atthe shopping centre. Come in and try our delicious meals. 2. Buy One, Get One Free Buy one shirt at Kate's Clothing Store, and get a T-shirt free. 3. 10% Off We have lots of books to choose from. You are sure to find something that you will enjoy at KM Bookstore. 10% off on any book you buy. Shop now for Christmas cards and we will have lots of toys asgifts for you. 4. Win a $100 CD Just buy any two CDs and your name will go into a draw (抽奖). If you are lucky, you can win a $100CD from JB Music Store. 1. What are the ads for? [ ]A. Food you can buy. B. Places to go on vacation. C. Special offers at a shopping centre. D. Things that are free. 2. If you spend $10 at Mike's Cafe, you can ______. [ ]A. get a free soft drinkB. get a T-shirt C. have a toy D. win a $100 CD 3. What kind of stores is NOT mentioned? [ ]A. The bookstore. B. The music stoe. C. The clothing store. D. The toy store. 4. If you buy a book with the pice of $50, you need to pay ______. [ ]A. $5B. $45C. $50 D. $55 5. If you buy two CDs at JB Music Store, ______. [ ]A. you may pay less than half the price B. you can get a free meal C. you'll have a chance to win a CD D. you can get some toys as gifts 查看答案
题型：选择题 男性，59岁，糖尿病，服格列本脲治疗，血糖波动在8.6～9.8mmol/L之间，尿糖++～+++6近3天感尿频、尿痛，昨起神志不清。查：血糖24mmol/L，血钠148mmol/L，血尿素氮7.08mmol/L，尿糖+++，尿酮++。应诊断为（）。A.低血糖昏迷B.乳酸性酸中毒C.高渗性非酮症性糖尿病昏迷D.糖尿病酮症酸中毒E.脑血管意外 查看答案
题型：选择题 下列说法中错误的是A．键长愈长，化学键愈不牢固B．元素周期表中从ⅢB族到ⅡB族10个纵行的元素都是金属元素C．除氦外的稀有气体原子的最外层电子数都是8D．原子及其离子的核外电子层数均等于该元素所在的周期数 查看答案