自由基的特点有（） A.带有不配对电子 B.容易失去电子 C.活性高 D.不稳定 E 发布时间：2017-08-11 08:04 │ 来源：www.tikuol.com 题型：多项选择题 问题： 自由基的特点有（）A.带有不配对电子B.容易失去电子C.活性高D.不稳定E.可与体内生物大分子作用
题型：多项选择题 中国的钢铁行业经过了七八年快速发展的高利润时期，如今己经跌入到微利甚至是亏损的寒冬期。下列举措有利于钢铁行业科学发展的是：（ ） ①调整产品结构，通过实现最低生产成本增强其竞争力 ②政府加大基础设施建设的投资力度，努力增加钢铁的需求量 ③制定相应的行业人才战略，为行业可持续发展体供智力支持④创新管理方式，利用市场机制促进行业转型升级 A．①②B．①④C．②③D．③④ 查看答案
题型：多项选择题 阅读下面短文，掌握其大意，然后从各题所给的四个选项（A、B、C和D）中，选出最佳选项。BDU www.chinadaily.com.cn/bdu C H I N A D A I L Y L A U N C H E S B D U BUSINESS DAILY UPDATEWant to keep abreast of (了解…的最新情况) the dynamic pulse (有力的脉搏) of China’s economy?Get a glimpse of the most important business activities taking place here every day through Business Daily Update, a service offered by China Daily information via the World Wide Web.Placed under 10 categories, over 25 news items appear each day with the top three events highlighted all in English. Business Daily Update is just a few mouse clicks away.Subscribe to BDU for an annual fee of US $240. Email and fax services are also Available upon request. For more information, please contact Business Daily Update: Tel: (010)64941107, (010) 64924488 ext. 2000; Fax: +86-10-64941125 Email: bdu@chinadaily. com. cn;URL:http://www.chinadaily.com.cn/bdu小题1:If you get into BDU, you can _____________.A．know more than what you expect in ChinaB．get the most important business information in the worldC．get the information of the latest business activities taking place in ChinaD．get all the information in China Daily小题2:This ad will be very helpful to ___________.A．foreign business peopleB．foreign travelersC．Chinese peopleD．China Daily reporters小题3:To get the information from BDU every day, you must ____________.A．understand ChineseB．know something about the mouseC．know how to operate a computerD．how to use a fax machine 查看答案