热门试题:
[多项选择]抽样调查的基本原则是（）。
A. 尽量选择发病率低的疾病
B. 选好研究因素
C. 样本必须足够大
D. 抽样必须随机化
E. 所选择的目标人群总人数不很多
[单项选择]如果X公司的竞争对手开发的新产品上市并获得消费者的高度认可，最可能导致X公司（ ）的重大错报风险上升。
A. 固定资产闲置
B. 存货跌价
C. 应收账款难以收回
D. 原材料短缺
[单选题]以下选项( )为黄茶典型汤色。
A.黄绿
B.黄绿明亮
C.红明亮
D.杏黄明亮
[单选题]铁路交通事故根据事故造成的人员伤亡、直接经济损失、列车总轨辆数、中断铁路行车时间等情形，事故等级分为特别重大事故、重大事故、()和一般事故。
A.大事故
B.较大事故
C.险性事故
[单项选择]蓄电池式电机车的适用条件为周围环境温度（）。
A. -20～+40℃
B. -2～+3℃
C. -10～+11℃
[单项选择]患儿，男，9岁，身高115cm，体重30kg，腹部膨隆，肝脏肿大，智力正常，骨龄落后。平素常有多汗、苍白症状，偶有清晨抽搐发作，该患儿应首选哪项检查
A. 生长激素激发试验
B. 甲状腺功能
C. 腹部B超
D. 头颅MRI
E. 糖代谢功能试验
[不定项选择题]严重慢性阻塞性肺疾病稳定期的治疗措施是（ ）。
A.长期低浓度吸氧
B.长期高浓度吸氧
C.呼气末正压通气
D.长期应用糖皮质激素
E.长期应用抗生素
[单选题]停止间敬礼,当领导进到距本单位适当距离时,指挥员下达“立正”的口令,跑步到领导前( )步处敬礼。
A.4-6
B.5-7
C.6-8
D.8-10
[多选题]建设工程设计是指根据建设工程的要求，对建设工程所需的（ ）等条件进行综合分析、论证，编制建设工程设计文件的活动。
A.技术
B.经济
C.资源
D.环境
E.效益
[填空题]When you make a decision,_______(你需要把一切可能的因素考虑在内).
[单选题]配网柱上三极隔离开关安装（户外隔离开关）时应水平安装，刀口（）。
A.向下
B.向上
C.垂直
D.水平
[单选题]( )是中央银行为实现特定经济目标而采用的控制和调节货币、信用及利率等方针和措施的总称。
A.财政政策
B.货币政策
C.利率政策
D.赤字政策
[单选题]主电机绕组温度小于（ ）℃，轴承温度小于（ ）℃。
A.80，30
B.95，45
C.125，75
D.115，65
[简答题]CRH2A型动车组主空气压缩机安装于号车。（1.0分）
[单项选择]病历摘要：患者男性，65岁，夜尿增多2年，3～5次/晚，伴尿线分叉、尿频。无尿痛和肉眼血尿。否认糖尿病、高血压和脑血管意外病史。体检：T36℃，P80次/分，R22次/分，BP138/70mmHg。考虑的诊断是？提示：直肠指诊：前列腺增大，中央沟变浅，未扪及硬结。前列腺超声：前列腺45ml，外腺区未见低回声区。（）
A. 慢性前列腺炎
B. 前列腺癌
C. 良性前列腺增生
D. 良性前列腺增生伴发前列腺癌
E. 诊断未明确，需进一步检查
[单选题]下列哪项不是新大环内酯类药物的特点（ ）
A. 抗菌谱广
B. 抗菌作用强
C. 不良反应轻
D. 无交叉耐药性
[多选题]造成临床表现不典型的因素有()
A.年老体弱
B.治疗的干扰
C.医师的认识水平
D.主诉不清楚
E.器官移位
[判断题]离心式水泵并联的水泵台数越多，流量增加的程度就越大。
[单项选择]导致左心室容量负荷增加的病变是（）
A. 二尖瓣狭窄
B. 三尖瓣关闭不全
C. 主动脉瓣狭窄
D. 主动脉瓣关闭不全
E. 肺动脉狭窄
[判断题]在占线板（簿）、《防溜交接簿》上实行铁鞋标号时，只需标注“铁鞋号码”（即铁鞋编号的末两位数字）。
A.正确
B.错误
[单项选择]哪类属于高温露天作业（）
A. 印染作业
B. 轧钢、炼钢、炼铁作业
C. 缝纫作业
D. 印刷作业
E. 建筑、修路夏季施工
[单选题]绝缘操作杆、验电器和测量杆允许的使用电压应与（）等级相符。
A.最低电压
B.最高电压
C.设备电压
D.等电位电压
[单选题]对到期的安全帽，应进行抽查测试，合格后方可使用，以后____抽检一次，抽检不合格，则该批安全帽报废。
A.每月
B.每季度
C.每半年
D.每年
[不定项选择题]Cats have the widest hearing range of nearly any mammal”not only can they perceive sound in what we define as the “ultrasonic” range, they can also appreciate all the bass Dr Dre can throw at them. They can swivel their whiskers forwards while hunting to provide a kind of short-range radar.And they can see exceptionally well in the dark thanks to a reflective surface behind the retina that bounces lightback, giving it a second chance to hit a photoreceptor. They see more distinct images per second than we do.
Dog partisans will appeal to the dog’s allegedly superior intelligence — though if that were the primary criterion for choosing a pet, one would expect to see a lot more crows and squid on leads around town. In fact, cats are rather cleverer than commonly assumed, as the biologist and animal-behaviour expert John Bradshaw shows in his new book.They can even be trained to an extent which was news to me Bradshaw’s book mixes pellets of cat lore with accounts of feline evolution, anatomy, genetics and development from newborn kitten to adulthood, plus descriptions of cat-psychology experiments in the laboratory, many of which he has conducted himself. Some of the most interesting parts indicate holes in our current scientific knowledge. “Many mother cats try to move their litters at least once before they wean them,” he observes, “but science has yet to find out why”. No one knows why cats go crazy for catnip, nor why they are able “to classify shapes according to whether they are closed or open.” Kittens, meanwhile, “may also use special movements of their tails to signal playfulness, but so far no scientist has been able to decode these”. As far as potential research projects go, decoding the tail-language of playing kittens must be about the interesting unsolved problem in science.
The cat is an apparently phlegmatic beast, but Bradshaw points out that cats experience strong emotions, and sometimes might be suffering in silence. They aren’t particularly sociable, and cats who are housed with others who weren’t litter-mates — perhaps by well-meaning owners who think they need the company — can become chronically stressed.
Luckily, then, cats probably aren’t aware that today they are once again hate-figures, the furry target of spittle-spraying ecologists who, armed with dodgy statistics, accuse cats of wildly “murdering” all the country’s songbirds. It’s a bit more complicated than that,Bradshaw shows. Rats also kill songbirds, and cats keep their numbers down; while the RSPB says the disappearance of habitat is a far more important factor in the decline of songbird populations than predator numbers. But we could at least, Bradshaw suggests, reverse the counterproductive selection pressure we currently exert on the domestic cat when we neuter house cats before they reproduce. This means,he explains, that the “friendliest, most docile” cats are prevented from leaving any descendants, while wild cats —which are more suspicious of humans and better at hunting— will leave more offspring. Unintentionally, we are causing cats to evolve into animals society won’t like as much
Cat-haters probably won’t appreciate this book, but anyone else might. It is written in a friendly and engaging way, has helpful tips for cat owners, and is packed with excellent cat facts. Why, you might have wondered, do cats get stuck up trees? Because all their claws face forwards, so none can be used as brakes on the descent. We all know how good cats are at twisting mid-air to land on their feet,but they have an even more impressive trick: some cats adopt a “parachute” position during a long fall, with all four legs stuck out to the side, before coming back to the landing position at the last moment. This cat-parachute pose,Bradshaw calculates, “limits the falling speed to a maximum of fifty-three miles an hour” so enabling some cats to fall from high-rise buildings and walk away unhurt. I’d like to see a dog try that.
For what reason did the ecologists accuse cats?
A.Reproducing more offspring.
B.Destroying songbirds’ habitat.
C.Killing the country’s songbirds.
D.Beingsuspicious of human beings
[判断题]受控消防设备将其工作状态信息发送给火灾报警控制器（联动型）的信号叫做联动反馈信号
A.正确
B.错误
[单选题]擅自公开或者变相公开发行证券的，责令停止发行，退还所募资金并加算银行同期存款利息，处以（ ）的罚款。
A.非法所募资金金额1%以上5%以下
B.非法所募资金金额5%以上50%以下
C.违法所得1倍以上5倍以下
D.违法所得5倍以上10倍以下
[单选题] 气体火焰焊是利用可燃气体(如乙炔.液化石油气.氢.丙烷等),以合适的比例与哪种物质发生激烈反应。()。
A.空气
B.氧气
C.氮气
[单项选择]对于KU频段地球站来说，线极化的极化隔离度要优于（）DB.
A. 25
B. 30
C. 35
D. 40
[单项选择]将职业道德认识、情感、信念转化为( )，是职业道德培养的根本目的。
A. 经济效益
B. 利益
C. 行动
D. 习惯
[单选题]在处理个人与社会的关系时,愿意多作贡献,少取报酬,在考虑个人利益时,能够先集体后个人,先他人后自己。做到这一点的人,一般具有( )。
A.先公后私的人生目的
B.自私自利的人生目的
C.为个人和全家求温饱的人生目的
D.主观为自己,客观为他人的人生目的
[判断题]机车、车辆无论空重状态，均不得超出轨道交通建筑限界。
A.正确
B.错误
[判断题]拉线及下锚零部件不得与回流线、保护线、地线间形成环流通路。
（ ）
A.正确
B.错误
[多选题]下列哪些情形下应当依法从轻或者减轻处罚
A.醉酒的人违反行政管理秩序的
B.精神病人违反行政管理秩序的
C.受他人胁迫违反行政管理秩序的
D.已满十四周岁不满十八周岁的人违反行政管理秩序的
[多选题]《港澳台居民居住证申领发放管理办法》中要求各机场公安机关要切实( ),提高( )和( ),主动与各公安厅局居住证制发管理部门对接
A.履行职责
B.政治敏感性
C.责任担当
D.严格检查
[多项选择]肺的肃降，向下向内布散的主要物质是（）
A. 浊气
B. 清气
C. 卫气
D. 津液
E. 水谷精气
