慢性淤血引起的后果,下列哪项是不正确的A.漏出性出血B.血栓形成C.含铁血黄素沉积D

题型:单项选择题

问题:

慢性淤血引起的后果,下列哪项是不正确的

A.漏出性出血
B.血栓形成
C.含铁血黄素沉积
D.间质细胞增生
E.实质细胞增生

考点:临床执业医师病理学血液循环障碍(一)
题型:单项选择题
-2a-a合并同类项为

A.-3a
B.-a
C.-2a2
D.-2
题型:单项选择题

阅读下列材料,回答:

材料一  东北平原地区是我国的主要商品粮基地分布区,该基地也是我国大豆的主产区。但近年来,由于进口大豆的冲击,豆价大幅下跌,由原来的2.2元/kg,降到现在的1.6元/kg,降幅近30%

材料二 国产大豆与进口大豆比较表 注:运输费用以到达大连为例。

材料三  东北平原某地生态农业示意图

(1)东北平原地区是我国农业机械化和水利化水平较高的农业区,从自然条件来看,这里有利于机械化、水利化建设的因素是                                               

                                                                      。(3分)

(2)作为商品粮基地,东北平原与其他商品粮基地比较,其突出的优势是             

                                                                   。(2分)

(3)据统计,我国每年从美国进口的大豆相当于国内大豆的总产量,进口大豆在我国畅销的主要原因是                                                      。(2分)

(4)由于价格下跌,产品滞销,豆农的生产积极性大受打击,纷纷减产或转产,我国东北大豆生产呈现萎缩之势。你认为应采取哪些措施,使东北大豆生产走出困境,重振雄风。(6分)

(5)生态农业作为农业的可持续发展之路在东北大豆产区近年来得到一定的发展和推广,试分析图示生态农业模式的好处。(6分)

(6)本地区有大面积的沼泽分布。近几年来,我国逐渐停止了在本地区的农垦项目,试分析这一措施的生态意义。(6分)

题型:单项选择题

Passage Two

Britain’s emissions of greenhouse gases, blamed by many scientists for contributing to global warming, have fallen by 14 percent since 1990, according to the latest government report.
British lakes and rivers are also on the road to recovery from acid rain poisoning, following successful curbs to air pollution from cars and heavy industry.
The report by the National Atmospheric Emissions Inventory (NAEI) attributed the drop in greenhouse gas emissions to several factors including: the introduction of catalytic converters on cars, a move toward low sulphur and lead-free petrol and a switch to gas from coal and oil in power generation.
Environment Minister Michael Meacher said the downward trend was welcome, but warned of complacency.
"Even though these figures are encouraging, we must not be complacent. There are still significant problems where we need to do more, for example, to further reduce greenhouse gases and harmful pollutants (污染物) such as ammonia and particulate matter," he said in a statement.
The government has a target to cut greenhouse gases by 23 percent by 2010 on 1990 levels. This is almost double the target of 12.5 percent to which the UK is committed under the Kyoto Protocol and there are signs that emissions are rising as generators return to using coal-fired power stations in the face of rising natural gas prices.
The Department of Environment Food and Rural Affairs (DEFRA) said substantial curbs on sulphur dioxide emissions across the UK and Europe had cut acid rain by half over the last 12 years. "Damaged freshwater lakes and streams are showing signs of recovery," it said.
But DEFRA warned of a new threat. "Nitrogen oxides and ammonia are the main air pollutants that must be tackled to stop future damage. "
The bulk of Britain’s ammonia emissions come from farm animal manure (粪肥), causing over-enrichment of land and waterways, said the report. Certain species rampage unchecked through this ultra-fertile environment, smothering the slower growing plants beneath them and choking streams and rivers. Nitrogen oxides enter the atmosphere from car exhausts and industry, creating health-damaging ozone and contributing to acid rain.

The bulk of ammonia emissions coming from farm animal manure may ______.

A.make land and waterways ultra-fertile

B.smother the growing of plants

C.create health damaging ozone

D.contribute to acid rain

题型:单项选择题

补写出下列名句名篇中的空缺部分。

(1)________________,朽木不折;锲而不舍,_______________。(荀子《劝学》)

(2)_______________,_____________。渔舟唱晚,响穷彭蠡之滨;雁阵惊寒,声断衡阳之浦。(王勃《滕王阁序》)

(3)三顾频烦天下计,_________________。_________________,长使英雄泪满襟。(杜甫《蜀相》)

题型:单项选择题

网卡主要是实现物理层和 【2】 层的功能。

更多题库