3.75:2.5化成最简整数比是______;正方体的棱长与棱长总和的比值是__

题型:填空题

问题:

3.75:2.5化成最简整数比是______;正方体的棱长与棱长总和的比值是______.

考点:比的化简
题型:填空题

如图是某物质一个分子的分子模型,其中“”和“”分别代表两种不同的原子.下列说法错误的是(  )

A.该物质可能是CO

B.该物质由两种元素组成

C.该物质中元素的原子个数比为1:1

D.该物质的一个分子由4个原子构成

题型:填空题

下列关于细菌、真菌与人类生活关系的叙述中,不正确的是(  )

A.酿酒、做面包、蒸馒头等离不开酵母蔺

B.制作豆酱、腐乳等食品离不开霉菌

C.细菌能够使食物腐败、伤口红肿化脓,因此,细菌都是有害的

D.细菌和真菌在细胞结构上的主要区别是细菌没有成形的细胞核

题型:填空题

某供应商关系模式为: Provider(PID,Pname,Tel,GoodsID,GoodsClassID,GoodsName,GoodsPrice)该关系模式应满足如下函数依赖: PID→Pname,PID→TEL,GoodsID→GoodsClassID, GoodsID→GoodsName,GoodsName→GoodsPrice则这个关系模式的主码为______。

A.(PID,GoodsNam

B.(PID,GoodsClassI

C.(PID,GoodsI

D.(PID,GoodsPric

题型:填空题

When two of the world’s richest and mightiest men pledge to destroy an enemy, it is time to pay attention. Bill Gates, the former boss of Microsoft who now devotes all his time to his charitable foundation, travelled this week to New York, the city run by Michael Bloomberg, to join his fellow billionaire’s campaign to stamp out smoking.

Have the two potentates met their match Despite decades of work by health campaigners, more than one billion people still smoke today. Smoking kills up to half of those who fail to quit puffing, reducing their lives by an average of 10 to 15 years. The World Health Organisation (WHO) says more than 5 million people a year die early from the effects (direct or indirect) of tobacco. That exceeds the combined toll of HIV/AIDS, tuberculosis and malaria.

Despite that dismal situation, there are three reasons to give the latest pair of campaigners a slim chance of success: money, methods and motivation. Messrs Gates and Bloomberg vowed to spend a combined total of $ 500 million on discouraging the weed. Since Mr. Bloomberg’s charity had already announced an award of $125 million earlier, the new money pledged this week totalled a "mere" $ 375 million: $ 250 million from the mayor, and a fresh $ 125 million from the software magnate’s philanthropic outfit.

How will this cash be spent In quite innovative ways, and that is a second reason for optimism. Hitherto, most anti-smoking funds have been channelled through a few large bureaucracies. But Mr. Bloomberg’s charity wants to let a thousand flowers bloom: in other words, to lend a hand to many initiatives, both public and private, to see what works. There will be a competitive grant scheme for poor countries where the tobacco habit is spreading.

The very fact that two giants are teaming up is a landmark in American philanthropy- comparable to Warren Buffett’s decision, two years ago, to put his fortune at the disposal of Mr. Gates’ foundation. As part of their joint commitment, Mr. Gates is giving some of his $ 125 million directly to Mr. Bloomberg’s charity; the rest will go to carefully monitored projects in India, China and other places where the number of smokers is rising relentlessly.

Then there is motivation. There are other big players in this cause, and that should induce every new entrant to try bringing something fresh to the party. Earlier this year the WHO started a campaign against tobacco known as MPower. One of its selling points was that in contrast with many other projects, it had a fairly clear idea about what was needed. WHO experts have listed a series of tactics, ranging from aggressive public education to a rise in tobacco taxes, that deliver results. (Even if high taxes lead to some smuggling and diversion, studies done in Brazil, for example, show that fiscal measures do curb consumption. ) The World Bank, which funded that research, is also thought to be ready to join the anti-smoking scrum after years of paying little attention.

A crowded field, indeed. But having an extra $ 500 million from two hard-driven billionaires surely won’t hurt.

According to the text, how will the money be spent()

A. On government-lead projects only

B. On either public or private projects, as long as it works

C. Mainly on promoting anti-smoking campaign in developing countries

D. On supporting the law suits against tobacco companies

题型:填空题

根据下面的资料回答问题
有一份CIF合同,出售矿砂5000公吨,合同装运条款规定:“CIF Hamburg,2006年2月份由一船或数船装运。”买方于2月15日装运了3100公吨,余数又在3月1日装上另一艘轮船。当卖方凭单据向买方要求付款时,买方以第二批货物延期装运为由,拒绝接受全部单据,并拒付全部贷款。

买方对该合同的权利有______。( )

A.拒绝全部货物

B.要求损害赔偿

C.解除合同

D.要求违约金

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