弯制不锈钢丝卡环最常用的钢丝直径为A．0.5mm B．0.7mm C．0.9mm D

病历摘要：患者男性，68岁。3天前因受凉感冒，而致发热、剧咳、咯大量黄色脓痰、气急、发绀，今晨起更出现神志模糊，躁动不安，故急送来院就诊。有吸烟史30余年，出现慢性咳嗽、咳痰已20多年。体检：T39.2℃，P122次/分，R30次/分，BP140/90mmHg。半卧位，意识模糊，唇颊发绀；球结膜充血。实验室检查：血液红细胞计数5.5×10¹²/L，血红蛋白含量160g/L；白细胞计数13×10⁹/L，其中中性粒细胞占0.92；动脉血氧分压6.9kPa，二氧化碳分压8kPa。

该病例发生缺氧的主要机制为（）。

A.心脏泵血功能减退

B.通气功能减退

C.通气与血流比例失调

D.肺泡壁弹性减退

E.肺纤维化

F.肺毛细血管增加

G.肺血流减少

H.肺毛细血管减少

理论上分解一千克电石，约需要（）千克水。

A.0.4

B.0.6

C.0.8

如下图所示，左边的楼高AB=60m，右边的楼高CD=24m，且BC=30m，地面上的目标

P位于距点C15m处．

（1）请画出从A处看地面上距离点C最近的点．这个点与点C之间的距离是多少

（2）从A处能看见目标P吗为什么

How Green is your orange juice More than a year ago, PepsiCo enlisted Columbia University’s Earth Institute and the environmental-auditing firm Carbon Trust to help assess the carbon footprint of each half gallon of its Tropicana orange juice. The sustainability initiative found that on average the process, from growing the oranges to getting a 64-oz. carton of healthy goodness into your fridge, involved emitting 3.75 Ib. of greenhouse gases. And the single biggest contributor to Tropicana’s carbon footprint wasn’t the gas-guzzling trucks that deliver the cartons to stores or the machinery used to run a modern citrus facility. It was the fertilizer for the orange trees, which accounted for a whopping 35% of the OJ’s overall emissions. That came as a surprise even to the people doing the accounting. "We thought it might be transport or packaging," says Tim Carey, PepsiCo’s sustainability director. "But the agricultural aspects of the operation are more important than we expected. "
So to make a greener OJ, Pepsico knew it needed to start looking for a greener fertilizer. Inorganic nitrogen fertilizer--the sort used by most farms in the U. S. --is very carbon-intensive because of all the natural gas used in the production process. (Agriculture eats up as much as 5% of natural-gas consumption worldwide, and the cost of fertilizer is closely linked to that of natural gas, leaving farmers vulnerable to huge price swings. ) Given how much nitrogen fertilizer is used on U. S. farms--more than 13 million tons in 2007 alone--developing a greener way to help pIants grow could put a serious dent in the country’s carbon emissions.
That’s why Pepsico is testing two low-carbon fertilizers at a citrus farm in Bradenton, Fla. Yara International, the world’s largest fertilizer producer, is supplying PepsiCo with an experimental calcium- nitrate-based fertilizer that emits much less nitrous oxide-which, pound for pound, has a far more powerful greenhouse effect than carbon dioxide--than conventional fertilizer does. The change in ingredients, plus a push to improve the energy efficiency at its production plants, could cut Yara’s fertilizer’s emissions by up to 90%.
The other fertilizer Pepsico is testing is an organic product made by Outlook Resources, a Toronto- based sustainable-agriculture company that uses biofuels, food waste and other renewable materials. Outlook is eschewing natural gas, a fossil fuel that often has to be transported long distances, and instead the firm is actively seeking out locally sourced ingredients that help cut its carbon footprint even further. And since Outlook’ s fertilizer is also more efficient than conventional fertilizer, less of it has to be used on crops, which helps prevent the water pollution linked to fertilizer runoff.
Backyard gardeners who want to cut their carbon footprint can emulate Outlook’s organic approach: skip the bag of fertilizer and make some biochar by smashing used charcoal bricks and sprinkling the dust on flower beds and vegetabIe patches. As for PepsiCo, the company will try out Yara and Outlook’s alterna-fertilizers for five years to see if they can cut Tropicana’s carbon footprint without diminishing overall crop yield, which would likely raise operating costs.
"Sustainability is ultimately about being a better company," says Carey. If the pilot study works, the greener fertilizers could shrink the carbon footprint of PepsiCo’s citrus growers by as much as 50% and reduce the total carbon footprint of a glass of its orange juice by up to 20%. Now that’s something we can all drink to.

1.Explain the beginning question of the passage: "How green is your orange juice "(para. 1) What do we know from the investigation of Earth Institute and Carbon Trust

某县公安派出所对打架斗殴的小李行政拘留的处罚行为，小李不服，欲寻求救济，他应该向哪个机关申请行政复议（）。

A.公安派出所

B.设立派出所的县公安局

C.县公安局的上一级市公安局

D.县政府