根据有关规定,总热效率的计算公式为()。 A.总热效率=[(供热量+供电量×3600

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问题:

根据有关规定,总热效率的计算公式为()。

A.总热效率=[(供热量+供电量×3600)/(燃烧总消耗量X燃烧单位低位热值)]×100%

B.总热效率=[(供热×3600+供电量×3600)/(燃烧总消耗量X燃烧单位低位热值)]×100%

C.总热效率=[(供热×3600+供电量)/(燃烧总消耗量×燃烧单位低位热值)]×100%

D.总热效率=[(供热×3600+供电量)/(燃烧总消耗量×燃烧单位低位热值×365)]×100%

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中国人民银行发布,从2014年4月25日起下调县域农村商业银行存款准备金率2个百分点,下调县域农村合作银行人民币存款准备金率0.5个百分点,引导信贷资源支持“三农”。央行此次对县域农村金融机构的准备金率进行结构性调整有利于

A.增加财政支出,繁荣农村经济

B.保持总量平衡,抑制通胀预期

C.降低融资成本,减轻企业负担

D.合理供应货币,优化经济结构

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对如图所示的四种自然现象,解释正确的是

[ ]

A、雾是水蒸气凝华而形成的

B、冰雪熔化是一个放热过程

C、露水的形成是一个放热过程

D、烈日下河流干涸是升华现象

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设本案中张某与李某是好友,对于张某应该于什么时候还款没有约定,只模糊地说应于1年左右还款,但到2000年3月5日,李某告诉张某,应该在2000年4月5日还款,则王某承担保证责任的期间应至:

A.2000年4月5日

B.2000年6月5日

C.2000年9月5日

D.2000年10月5日

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 第一篇 Is the Tie a Necessity?  Ties, or neckties, have been a symbol of politeness and elegance in Britain for centuries. But the casual Prime Minister Tony Blair has problems with them. Reports suggest that even the civil servants may stop wearing ties. So, are the famously formal British really going to abandon the neckties Maybe. Last week, the UK’s Cabinet Secretary Andrew Turnbull openly welcomed a tieless era. He hinted that civil servants would soon be tree of the costliest 12 inches of fabric that most men ever buy in their lives.  In fact, Blair showed this attitude when he had his first guests to a cocktail party. Many of them were celebrities (知名人士) without ties, which would have been unimaginable even in the recent past.For some more conservative British, the tie is a must for proper appearance. Earlier, Labor leader Jim Callaghan said he would have died rather than have his children seen in public without a tie. For people like Callaghan, the tile was a sign of being complete, of showing respect. Men were supposed to wear a tie when going to church, to work in the office, to a party - almost every social occasion.But today, people have begun to accept a casual style even for formal occasions.  The origin of the tie is tricky. It started as something called simply a "band". The term could mean anything around a man’s neck. It appeared in finer ways in the 1630s. Frenchmen showed a love of this particular fashion statement. Their neckwear (颈饰)impressed Charles II, the king of England who was exiled(流放)to France at that time. When he returned to England in 1660, he brought this new fashion item along with him.It wasn’t, however, until the late 18th century that fancy young men introduced a more colorful, flowing piece of cloth that eventually became known as the tie. Then, clubs military institutions and schools began to use colored and patterned ties to indicate the wearer’s membership in the late 19th century. After that, the tie became a necessary item of clothing for British gentlemen.  But now, even gentlemen are getting tired of ties. Anyway, the day feels a bit easier when you wake up without having to decide which tie suits you and your mood.

Which of the following is NOT a social occasion

A.Going to church.

B.Going to work in the office.

C.Staying at home.

D.Going to a party.

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1847年,()在英吉利海峡铺设了第一条海底电缆。

A、英法

B、英美

C、美法

D、英德

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