题干

(2008·全国Ⅰ理综)电解100 mL含c(H+)=0.30 mol/L的下列溶液。当电路中通过0.04 mol电子时,理论上析出金属质量最大的是(  )

A:0.10 mol/L Ag+

B:0.20 mol/L Zn2+

C:0.20 mol/L Cu2+

D:0.20 mol/L Pb2+

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C

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Boston College is a state­supportedcollege on the east coast of England which has been recruiting overseasstudents for over 20 years and now has almost 200 international students frommore than 20 different countries.You and your parents can be sure you willreceive the care and support you need to succeed at our college.

We have excellent teaching staff, withtime and patience to help you learn in a stimulating but relaxed atmosphere.We are accredited by the British Council for the quality of our Englishlanguage teaching so you can be sure your learning experience will be good.

Our new modular English course isflexible and enables you to choose the best time to join us.Not only will youcover all aspects of the English language but you will have the choice ofoption subjects such as IELTS Preparation, British Culture, Literature,Business English or Study Skills.We will assess your level of English when youarrive so you can be sure you will study with students of the sameability.Classes are small:usually12~16students so you will receive the individual attention you need to help yousucceed.

Boston College is based on two maincampuses with English courses being taught in our state­of­the­art languagebuilding convenient for our Hall of Residence on the Rochford Campus.A­Leveland International Foundation classes are taught on both Rochford and DeMontfort Campuses.Classrooms are modern and well equipped with a number of specialistfacilities for photography and video,computersuites, art and music studios and an all weather sports pitch.Both campuseshave large Learning Resource Centres, well equipped with computers for studentuse, also available for research or assignment work.Our diploma courses includecatering, hairdressing, computing and engineering, each with its own specialistfacilities.We also have a Music Centre providing teaching rooms, recordingstudio and concert hall.

Notes:

diploma n.文凭

同类题2

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(5)我国科学家运用基因工程技术,将苏云金芽孢杆菌的抗虫基因导入棉花细胞并成功表达培育出了抗虫棉.转基因作物的种植使害虫得到有效控制,减少了农药的使用量,保护了生态环境.与此同时,人们对转基因生物的安全性提出了质疑,主要体现在生物安全、____ 和____ 等方面.

(6)桑基鱼塘生态系统能充分利用废弃物中的能量,形成无废弃物农业,这主要遵循了生态工程的____ 原理.同时,通过饲养家禽、家畜、栽培食用菌,提高农民经济收入,是保护环境和发展经济相互协调,这又体现了生态工程的____ 原理.我国西北一些地区年降雨量少,适宜种植灌木和草,却被硬性规定种植属于乔木的杨树,致使许多地方的杨树长成半死不活状,结果防护林称为残败的“灰色长城”.其失败的原因主要是违背了____ 原理.