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1
题型: 单选题
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单选题

关于一定质量的理想气体发生状态变化时,其状态量p、v、t的变化情况,不可能的是

[ ]

Ap、v、t都增大

Bp减小,v和t增大

Cp和v减小,t增大

Dp和t增大,v减小

正确答案

C
1
题型: 多选题
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多选题

对一定质量的气体,下列四种状态变化中,哪些是可能实现的

[ ]

A增大压强时,温度降低,体积增大

B升高温度时,压强增大,体积减小

C降低温度时,压强增大,体积不变

D降低温度时,压强减小,体积增大

正确答案

B,D
1
题型: 单选题
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单选题

对于理想气体,下列说法正确的是

[ ]

A当温度升高时,体积必定增大

B当压强增大时,体积必定减小

C当压强和温度不变时,体积可能增大

D当温度不变,压强增大时,体积必定减小

正确答案

D
1
题型:简答题
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单选题


Asia’s real boat-rocker is a growing China, not Japan, a senior American economist observed.
There is so much noise surrounding and emanating from the world’s miracle economy that it is becoming cacophonous. In Washington, D. C., the latest idea is that China is becoming too successful, perhaps even dangerously so: while Capitol Hill resounds with complaints of trade surpluses and currency manipulation, the Pentagon and sundry think-tanks echo to a new drumbeat of analysts worrying about China’s 12.6% annual rise in military spending and about whether it might soon have the ability to take preemptive military action to force Taiwan to rejoin it. So it may be no coincidence that for
three consecutive weekends the streets of big Chinese cities have been filled with the sounds of demonstrators marching and rocks being thrown, all seeking to send a different message: that Japan is the problem in Asia, not China, because of its wanton failure to face up to its history; and that by cosying up to Japan in security matters, America is allying with Asia’s pariah.
Deafness is not the only risk from all this noise. The pressure towards protectionism in Washington is strong, and could put in further danger not only trade with China but also the wider climate for trade liberalisation in the Doha round of the World Trade Organisation (WTO). So far words have been the main weapons used between China and Japan, but there is a chance that nationalism in either or both countries could lead the governments to strike confrontational poses over their territorial disputes in the seas that divide them, even involving their navies. And the more that nationalist positions become entrenched in both countries but especially China, the more that street protests could become stirred up, perhaps towards more violence.
All these issues are complex ones and, as is often the case in trade and in historical disputes, finding solutions is likely to be far from simple. A revaluation of the yuan, as demanded in Congress, would not rebalance trade between America and China, though it might help a little, in due course. A "sincere" apology by Japan for its wartime atrocities might also help a little, but it would not suddenly turn Asia’s natural great-power rivals into bosom buddies. For behind all the noise lies one big fact: that it is the rise of China, not the status or conduct of Japan, that poses Asia’s thorniest questions.The "the world's miracle economy" in the beginning of the second paragraph refers to()

A.Asia's real boat-rocker.
B.China's economic success.
C.Japan's economic success.
D.both China and Japan's economic success.

正确答案

B

解析

推理题。文章一开始就谈到,亚洲真正掌舵的是中国,而不是日本;第二段第二句也提到“…中国正变得太成功”,由此可推知第二段开头的“世界的奇迹经济”指的就是中国的经济成功,所以[B]项正确。[A]“亚洲真正的掌舵者”,[C]“日本的经济成功”和[D]“中国和日本的经济成功”都不是文章所要表达的内容。

1
题型:简答题
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单选题

国民经济评价是在合理配置社会资源的前提下,从( )的角度计算项目对国民经济的贡献、效益和影响,从而评价项目在宏观经济上的合理性。

A.国民经济整体效益
B.单一领域的经济效益
C.环境保护与利用
D.自然资源的合理性开发

正确答案

A

解析

暂无解析

1
题型:简答题
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单选题

工程质量保修是一种售后服务方式,建设工程质量保修制度是国家所确定的重要法律制度,其中,保修的期限是十分重要的工程质量保修内容。以下关于具体的保修范围和最低保修期限的说法正确的是( )。

A.基础设施工程房屋建筑的地基基础工程和主体结构工程,为设计文件规定的该工程的合理使用年限
B.屋面防水工程,有防水要求的卫生间、房间和外墙面的防渗漏保修期为2年
C.电气管线、给排水管道、设备安装和装修工程保修期为5年
D.其他项目的保修期限由承发包单方在合同中规定

正确答案

A

解析

暂无解析

1
题型:简答题
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单选题


Every spring migrating salmon return to British Columbia’s rivers to spawn. And every spring new reports detail fresh disasters that befall them. This year is no different. The fisheries committee of Canada’s House of Commons and a former chief justice of British Columbia, Bryan Williams, have just examined separately why 1.3 million sockeye salmon mysteriously "disappeared" from the famed Fraser river fishery in 2004.Their conclusions point to a politically explosive conflict between the survival of salmon and the rights of First Nations, as Canadians call Indians.
In 2004, only about 524, 000 salmon are thought to have returned to the spawning grounds, barely more than a quarter the number who made it four years earlier. High water temperatures may have killed many. The House of Commons also lambasted the federal Department of Fisheries and Oceans (DFO) for poor scientific data, and for failing to enforce catch levels. Four similar reports since 1992 have called for the department’s reform. In vain: its senior officials are "in denial" about its ’failings, said the committee.
Mr. Williams’ report added a more shocking twist. He concluded that illegal fishing on the Fraser river is "rampant and out of control", with "no go" zones where fisheries officers are told not to confront Indian poachers for fear of violence. The judge complained that the DFO withheld a report by one of its investigators which detailed extensive poaching and sale of salmon by members of the Cheam First Nation, some of whom were armed.
Some First Nations claim an unrestricted right to fish and sell their catch. Canada’s constitution acknowledges the aboriginal right to fish for food and for social and ceremonial needs, but not a general commercial right. On the Fraser, however, the DFO has granted Indians a special commercial fishery. To some Indians, even that is not enough.
Both reports called for more funds for the DFO, to improve data collection and enforcement. They also recommended returning to a single legal regime for commercial fishing applying to all Canadians.
On April 14th, Geoff Regan, the federal fisheries minister, responded to two previous reports from a year ago. One, from a First Nations group, suggested giving natives a rising share of the catch. The other proposed a new quota system for fishing licences, and the conclusion of long-standing talks on treaties, including fishing rights, with First Nations. Mr. Regan said his department would spend this year consulting "stakeholders" (natives, commercial and sport fishermen). It will also launch pilot projects aimed at improving conservation, enforcement and First Nations’ access to fisheries.Which of the following is NOT the reason for the decrease of salmon according to Mr. Williams()

A.High water temperatures.
B.Shocking twist.
C.Illegal fishing.
D.Officials' failings.

正确答案

B

解析

细节题。文章第二、三段提到水温高、非法捕鱼和官员执法不力都是鲑鱼数量减少的原因,即题目中的[A]、[C]、[D]三项。只有[B]“骇人听闻的歪曲”不是文中提到的原因之一。

1
题型:简答题
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单选题

Many theories have been ______ as to why some women suffer from depression.

A.referred to
B.put forward
C.rest assured
D.left out

正确答案

B

解析

(put forward提出)。句意为:就一些女人为什么患抑郁症而言,已经提出许多理论。A.refer to谈到,提及,查阅;C.rest assured放心;D.leave out省略,遗漏。

1
题型:简答题
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单选题

输血引起枸橼酸钠中毒反应的表现是

A.寒战、发热、恶心、呕吐
B.四肢麻木、腰背剧痛、胸闷
C.手足抽搐、心率缓慢、出血倾向
D.呼吸困难、咳粉红色泡沫样痰
E.血管神经性水肿伴呼吸困难

正确答案

C

解析

大量输血、肝功能不全,使枸橼酸钠尚未氧化即和血中游离钙结合使血钙下降,出现手足抽搐。

1
题型:简答题
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单选题

肌内注射选用联线法划分部位时,其注射区应选择髂前上棘与尾骨两点联线的

A.外上1/3处
B.外上1/2处
C.中1/3处
D.后1/3处
E.后1/2处

正确答案

A

解析

肌内注射选用联线法划分部位时,其注射区应选择髂前上棘与尾骨两点联线的外上1/3处为注射部位,因为该位置可避开坐骨神经。

下一知识点 : 气体热现象的微观意义
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