Now which are the animals really to be
pitied in captivity First, those clever beings whose lively urge for activity
can find no outlet behind the bars of the cage. This is most conspicuous, even
for the uninitiated, in the case of animals which, when living in a free state,
are accustomed to roaming about widely. Owing to this frustrated desire, foxes
and wolves housed, in many old-fashioned zoos, in cages which are far too small,
are among the most pitiable of all caged animals. Though pinioned swans generally seem happy, under proper care, by hatching and rearing their young without any trouble, at migration time things become different: they repeatedly swim to the lee side of the pond, in order to have the whole extent of its surface at their disposal, trying to take off. Again and again the grand preparations end in a pathetic flutter of their A. reaction to B. understanding of C. second thoughts about D. enlightenment on [单项选择]Scraps of food could soon be helping power your home, thanks to an ultra-cheap bacteria-driven battery. Its developers hope that instead of feeding the dog or making garden compost(混合肥料) ,organic household waste could top up your home’s electricity.
Although such "microbial fuel cells" (MFCs)have been developed in the past, they have always proved extremely inefficient and expensive. Now Chris Melhuish and technologists at the University of the West of England(UWE)in Bristol have come up with a simplified MFC that costs as little as £10 to make. Right now, their fuel cell runs only on sugar cubes, since these produce almost no waste when broken down, but they aim to move on to carrot power. "It has to be able to use raw materials, rather than giving it a refined fuel," says Melhuish. Inside the Walkman-sized battery, a colony of E. coil bacteria produce enzymes that break down carbohydrates, releasing hydrogen atoms. The cell also contains chemicals that drive a series o A. reduction and oxidation reaction B. electron from the hydrogen atoms C. bacteria-driven battery D. a colony of E.coli bacteria [单选题]无人机驾驶员操纵副翼时,飞行器将绕
A. 横轴运动 B. 纵轴运动 C. 立轴运动 [判断题](30242)( )隧道内只采用昼夜通用信号。
A.正确 B.错误 [判断题] 高处作业是指在坠落高度基准面2m及以上有可能坠落的高处进行的作业。( )
A.正确 B.错误 [单选题]《铁路乘车证管理办法》(铁劳〔1994〕142号)规定,持乘车证到列车上使用卧铺时,应将()连同乘车证交列车员保管,并办理签证。
A.铁路工作证 B.出差证明、卡片 C.出差证明 D.签证卧铺票 [单选题]不带阶台的实体心轴有( )的锥度。
A.1:1000~1:5000 B.1:500~1:1000 C.1:750~1:1200 D.1:1200~1:2500 [单选题] 1983年,成功引进()项目,是国内第一家全面引进国外重型汽车整车制造技术的企业。
A.斯太尔 B.沃尔沃 C.曼 D.汕德卡 [单选题]离心泵内导轮的作用是
A.增加转速 B.改变叶轮转向 C.转变能量形式,减少能耗 D.密封 [多选题] 服务营销中对客户的潜在价值的评估可以从( )等方面来评价。
A.贡献度 B.信用度 C.成长度 D.影响力 [单选题] 办事公道是指从业人员在进行职业活动时要做到( )。
A.追求真理,坚持原则 B.有求必应,助人为乐 C.公私不分,一切平等 D.知人善任,提拔知己 [多项选择]下列犯罪是危害国家安全罪的有( )。
A. 国家工作人员在履行公务期间,擅离岗位,叛逃境外或在境外叛逃 B. 抢夺、抢劫枪支罪 C. 武装叛乱、暴乱罪 D. 恐怖活动罪 [单选题]导线的电阻值与( )。
A. 其两端所加电压成正比 B. 流过的电流成反比 C. 所加电压和流过的电流无关 D. 导线的截面积成正比 [判断题]用亚甲蓝分光光度法测定阴离子表面活性剂时,有许多非表面活性物质或多或少地与亚甲蓝作用生成可溶于三氯甲烷的蓝色络合物,致使测定结果偏低。通过水溶液反洗,可消除这些干扰。
[单项选择]{{I}}Questions 1 to 5 are based on an interview with a chief-editor. At the end of the interview you will be given 10 seconds to answer each of the following questions.
Now listen to the interview.{{/I}}From the conversation we get the impression that______.
A. some official agencies in London are efficient B. taxi drivers abroad always overcharge strangers C. customs formalities in Britain are flexible D. travel agents tend to misinform people [判断题]实施行政强制应当遵循便民原则。
A.正确 B.错误 [单项选择]以课税主体为标准可将税收分为()。
A. 直接税、间接税 B. 中央税、地方税 C. 价内税、价外税 D. 所得税,资源、财产税,目的、行为税和进出口关税 [单选题]装载超限货物的车辆按装载普通货物的车辆编入列车为( )事故。
A.一般A类 B.一般B类 C.一般C类 D.一般D类 [判断题]防止车管所未按照自主预约要求进行考试预约,而是通过与驾校协商,由驾校统一组织预约。业务监管岗针对此种数据核查的标准是:某驾校当天约考人数超过前三天平均日考试人数的3倍。
A.正确 B.错误 [简答题]调车作业中,机车车辆必须停在警冲标内方。
[判断题]判断题:信号楼值班员和行值应及时向行调报出入场列车到开点。
A.正确 B.错误 [单选题]固定轴安装在主车架上,起着( )传动轴夹角的作用,实现前后两根传动轴间的动力传递。
A.增大 B.减小 C.保持 D.改变 [单选题]误码率( )是指( )数据位传输时出错的概率。它是衡量数据通信系统在正常工作情况下的传输可靠性的指标。在计算机网络中,一般要求误码率低于10的负六次方。
A.误码率 B.二进制 C.错误率 D.十进制 [单项选择]五个发起人拟用募集设立的方式设立一个股份有限公司,公司注册资本为4000万元人民币,折合为4000万股。关于该公司设立时资本的筹集,下列说法正确的是:
A. 全部发起人首期出资至少要达到800万 B. 全部发起人至少要认购1400万股 C. 考虑到专利的贬值趋势,甲的专利以8折评估作价 D. 在向社会募股时,发起人既可以自己销售股份,也可由依法设立的证券经营机构承销 [判断题]( )动车组回送时,动车组的1.2位端均可通过过渡车钩与机车连接组成固定编组。(1.0分)
A.正确 B.错误 [单选题]下列()不会产生电动机振动。
A.电枢平衡位校好 B.电动机断电 C.转轴变形 D.联轴器未校正 [单选题]下列不属于框架保护动作原因的是()
A.异物(如老鼠)侵入 B.绝缘子击穿 C.负极小母排与框架短接 D.400V抽屉跳闸 E.— [单选题]某农业银行职员刘某,为帮助儿子转移、藏匿走私犯罪收入,利用职务之便以假名给其开立账户,存放赃款。案发后,刘某被公安机关依法逮捕。刘某的行为构成( )。
A.窝藏罪 B.包庇罪 C.洗钱罪 D.掩饰、隐瞒犯罪所得罪 [多项选择]某报纸报道称,A省的人大常委会针对越来越严重的行政干预司法现象,对本省内的司法机关提出了明确要求,不要把领导批示作为办案依据。你认为关于这一报道的评论,哪些选项是正确的
A. 该省人大常委会提出这一要求是有充分事实依据的,有很强的现实意义 B. 无论领导的权力有多大地位有多高,个人插手干预司法,就是滥用职权,而且不利于司法独立 C. “不把领导批示当办案依据”是对司法人员的要求;对领导就不用同样提出明确要求了,只要司法坚守独立地位,行政干预就不可能发生 D. 有时候领导批示是为了司法效率,可以更好地解决纠纷,也是必要的,只要领导的批示不太违反原则,就可以参照办理 我来回答: 提交
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