男性患者,65岁。因急性心肌梗死合并心力衰竭2周入院。心电图示:高度房室传导阻滞,以

题型:单项选择题

问题:

男性患者,65岁。因急性心肌梗死合并心力衰竭2周入院。心电图示:高度房室传导阻滞,以下治疗方案中最佳的是

A.洋地黄+心脏起搏器
B.洋地黄+阿托品
C.洋地黄+异丙肾上腺素
D.洋地黄牛多巴酚丁胺
E.阿托品+利尿药

考点:卫生资格考试(中初级)呼吸科专业知识呼吸科主治医师专业知识
题型:单项选择题

读下表完成填空

(1)可形成XY2型化合物的元素是______________。

(2)一般难形成化合物的元素是________________。

(3)______________在元素周期表中位于C的后边。

(4)我发现:___________________________________________。

题型:单项选择题

“医学贵精,不精则害人匪细”,“用药如用兵”,“用药如用神”,以上论述要求医务人员必须具有()的医德品质。()

A.仁慈

B.严谨

C.公正

D.节操

题型:单项选择题

官吏主管部门在西汉是()

A.尚书台

B.尚书吏部

C.文官归吏部

D.丞相御史二府

题型:单项选择题

1877年5月16日,法国君主派总统麦克马洪在参议院同意下将众议院解散。在新众议院的竞选中,参加投票的选民高达80%以上,共和派取得绝对优势。后来麦克马洪被迫辞职,共和派领袖当选为总统。材料说明()

①法国君主派不甘心失败

②法国共和派取得真正主导地位

③法国民众支持共和制度

④共和政体的确立是法国历史发展的必然趋势

A.②③④

B.①②④

C.②④

D.①②③④

题型:单项选择题

“This is a really exciting time — a new era is starting,” says Peter Bazalgette, the chief creative officer of Endemol. He is referring to the upsurge of interest in mobile television, a nascent industry at the intersection of telecoms and media which offers new opportunities to device-makers, content producers and mobile-network operators. And he is far from alone in his enthusiasm.

Already, many mobile operators offer a selection of television channels or individual shows, which are “streamed” across their third-generation (3G) networks. 41. ______.

Meanwhile, Apple Computer, which launched a video-capable version of its iPod portable music-player in October, is striking deals with television networks to expand the range of shows that can be purchased for viewing on the device, including “Lost”, “Desperate Housewives” and “Law & Order”.

42. ______. For a start, nobody really knows if consumers will pay for it, though surveys suggest they like the idea. Informa, a consultancy, says there will be 125m mobile-TV users by 2010. But many other mobile technologies inspired high hopes and then failed to live up to expectations. And even if people do want TV on the move, there is further uncertainty in two areas: technology and business models.

At the moment, mobile TV is mostly streamed over 3G networks. But sending an individual data stream to each viewer is inefficient and will be unsustainable in the long run if mobile TV takes off. 43. ______.

44. ______. That suggests that some shows (such as drama) better suit the download model, while others (such as live news, sports or reality shows) are better suited to real-time transmission. The two approaches will probably co-exist.

Just as there are several competing mobile-TV technologies, there are also many possible business models. Mobile operators might choose to build their own mobile-TV broadcast networks; or they could form a consortium and build a shared network; or existing broadcasters could build such networks.

The big question is whether the broadcasters and mobile operators can agree how to divide the spoils, assuming there are any. Broadcasters own the content, but mobile operators generally control the handsets, and they do not always see eye to eye. 45.

Then there is the question of who will fund the production of mobile-TV content: broadcasters, operators or advertisers Again, the answer is probably “all of the above”.

A.So the general consensus is that 3G streaming is a prelude to the construction of dedicated mobile-TV broadcast networks, which transmit digital TV signals on entirely different frequencies to those used for voice and data. There are three main standards: DVB-H, favoured in Europe; DMB, which has been adopted in South Korea and Japan; and MediaFLO, which is being rolled out in America. Watching TV using any of these technologies requires a TV-capable handset, of course.

B.In contrast, watching downloaded TV programmes on an iPod or other portable video player is already possible today. And unlike a programme streamed over 3G or broadcast via a dedicated mobile-TV network, shows stored on an iPod can be watched on. an underground train or in regions with patchy network coverage.

C.In South Korea, television is also sent to mobile phones via satellite and terrestrial broadcast networks, which is far more efficient than sending video across mobile networks. In Europe, the Italian arm of 3, a mobile operator, recently acquired Channel 7, a television channel, with a view to launching mobile-TV broadcasts in Italy in the second half of 2006.

D.Despite all this activity, however, the prospects for mobile TV are unclear.

E.Assuming the technology and the business models can be sorted out, there is still the tricky matter of content.

F.In South Korea, a consortium of broadcasters launched a free-to-air DMB network last month, but the country’s mobile operators were reluctant to provide their users with handsets able to receive the broadcasts, since they were unwilling to undermine the prospects for their own subscription-based mobile-TV services.

G.The potential for mobile TV is vast, in short — but so is the degree of uncertainty over how it should actually be put into practice.

42().

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