热门试题:
[单选题]关于L-dopa的下述情况哪种是错的
A.口服后0.5~2小时血浆浓度达峰值
B.作用快,初次用药数小时即明显见效
C.进人中枢神经系统的L-dopa不足用量的1%
D.高蛋白饮食可减低其生物利用度
E.外周脱羧形成的多巴胺是造成不良反应的主要原因
[单选题]一般来说,在频率一定的情况下,在给定的材料中,横波探测缺陷要比纵波灵敏,这是因为()。
A.横波比纵波的波长短
B.横波质点振动的方向比缺陷更为灵敏
C.在材料中横波不易扩散
D.横波比纵波的波长长
[单项选择]化脓性角膜溃疡进行角膜刮片和培养等实验室检查证实病原菌是丝状菌属,首选的局部治疗药物是()
A. 二性霉素B
B. 纳他霉素
C. 氟胞嘧啶
D. 咪康唑
E. 氟康唑
[多项选择]减少供电线路损失的方法有( )。
A. 应当使电气照明的工作电压保持在允许的电压偏移之内。在采用气体放电光源较多的场所,应采用补偿电容提高功率因数
B. 不要使用高功率因数的镇流器,以减小线路损失
C. 除了安全必须采用36V以下照明灯器外,应尽量采用较高电压的照明灯器
D. 照明电源线路应尽量采用三相四线制供电,以减小电压损失。在设计时因尽量使三相照明负荷对称,以免影响灯泡的发光效率
[多项选择]A建筑公司参加了某建设单位组织的研发楼项目招标,该项目招标按《建设工程工程量清单计价规范》(GB 50500—2008)进行。A建筑公司根据本企业的优势进行了报价,最后中标该项目。
根据材料,回答下列问题:
分部分项工程费是由( )组成。
A. 企业管理费
B. 措施费
C. 人工费
D. 材料费
E. 利润
[单选题] 通信电源现在都采用全浮充工作方式,即整流器与蓄电池组( )向负载供电。
A.并联
B.混接
C.串联
D.级联
[单选题]根据《冷水机组》的规定,按名义工况制冷性能系数大小,将冷水(热泵)机组分为( )。
A.三级,1级为能源.效率最高级,3级为合格级
B.三级,1级为合格级,3级为能源效率最高级
C.五级,1级为合格级,5级为能源效率最高级
D.五级,1级为能源效率最高级,5级为合格级
[判断题]应急预案修订应定期进行评审,实现可持续改进。( )掌握
A.正确
B.错误
[判断题]分接开关分头间的绝缘属于纵绝缘。
A.正确
B.错误
[单选题]对流传热时流体处于湍动状态,在滞流内层中,热量传递的主要方式是( )
A.传导
B. 对流
C.辐射
D.传导和对流同时
[单项选择]For many people today, reading is no longer relaxation. To keep up their work they must read letters, reports, trade publications, interoffice communications, not to mention newspapers and magazines: a never-ending flood of words.
In (36) a job or advancing in one, the ability to read and comprehend (37) can mean the difference between success and failure. Yet the unfortunate fact is that most of us are (38) readers.
Most of us develop poor reading (39) at an early age, and never get over them. The main deficiency (40) in the actual stuff of language itself—words. Taken individually, words have (41) meaning until they are strung together into phrases, sentences and para-graphs. (42) , however, the untrained reader does not read groups of words. He laboriously reads one word at a time, often regressing to (43) words or passages.
Regression, the tendency to look back over (44) you have just read, is a common ba
[单选题]艾宾浩斯遗忘曲线表明,复习时主要应采取( )。
A.合理分配复习时间
B.试图回忆和反复阅读相结合
C.采取多样化方法
D.及时复习
[单项选择]Unlike modern animal scientists, dinosaur scientists cannot sit on a hillside and use telescopes to watch dinosaurs in order to know how they lived and whether they were good parents. Instead, they have to search hard for information from dinosaurs’ fossils(恐龙化石) because dinosaurs died out millions of years ago.
It’s very difficult for the scientists to reach an agreement because different results can be got from the same fossils, Many fossils of the same kind of dinosaurs have been dug out from one place. They might have formed when an entire group of dinosaurs got stuck (陷入) all at once. Or they might have been the result of dinosaurs getting stuck one after another over a course of a few centuries. Thus we can say that dinosaurs might have in the first case lived in big groups and in the second lived alone.
Though there are two different results, dinosaur scientists now generally agree that at least some kinds of dinosaurs lived in big groups. "That’s pretty much settled
A. Birds hardly pay attention to their young.
B. Baby crocodiles can look after themselves well.
C. Some dinosaurs took care of their young.
D. Birds and crocodiles take good care of their youn
[单项选择]
All over Europe, and in North America, there're lakes and forests which are dead or (1) and the (2) is thought to be acid rain. What is acid rain Mr. Justin Cook, a scientist, explains: "All fossil fuels, (矿物燃料),that (3) oil, coal and gas, contain sulphur. When these are burnt, for example (4) motor vehicles, they form sulphuric acid (硫酸)This (5) UP into the air, and soon it falls back to (6) , into lakes and (7) trees in forests." This can cause many local problems. (8) a result, lakes become acidic, fish disappear and trees are killed. The pollution is carried great distances by the wind, so sulphuric acid (9) in Britain can travel as far as Scandinavia (斯堪的纳维亚). Czech is one of the countries with the most acid rains and large areas of (10) consist only (11) dead trees.
Is there (12) that can be done about acid rain Mr. cook says: "The rain (13) of acid rain is (14) power stations to install filters that (15) the acid getting out into the air. Here
A. if
B. when
C. until
D. unless
[单选题]在重大节日或者组织重要活动时,可以检阅队伍检阅队伍,由党和国家领导人,支队级以上单位主官或者被上述人员授权的其他领导实施通常由()人检阅
A.A、1
B.B、2
C.C、3
D.D、4
[判断题]不准使卸扣处于吊件的转角处。
正确
错误
A.正确
B.错误
[单项选择]关于宫颈糜烂的叙述,正确的是()
A. 好发于宫颈原始鳞-柱交界处
B. 为鳞状上皮脱落而被柱状上皮取代
C. 分为单纯型和颗粒型两型
D. 分为Ⅰ、Ⅱ、Ⅲ、Ⅳ度
E. 宫颈腺囊肿与宫颈糜烂无关
[多选题]电缆截面的选择,应在不同敷设条件下电缆额定载流量的基础上,考虑()等因素后选择。
A.环境温度
B.并行敷设
C.热阻系数
D.埋设深度
[单项选择]天线安装位置距机房距离小于()米。
A. 40
B. 50
C. 60
D. 100
[单项选择]
Sex Change Surgery Guidelines Drafted
China is set to issue its first clinical guideline on sex change surgery, according to a notice put on the website of the Ministry of Health yesterday. The ministry is now soliciting(征求)public and professional
(51) on the draft guideline. The coming guideline aims to regulate and standardize sex reassignment surgery.
Experts
(52) nearly 2,000 Chinese have undergone sex-change surgery while 100, 000 to 400,000 are still considering it. However, no official number is available. In the draft, the MOH sets minimum 53 for both surgical candidates and medical institutions.
Candidates for the surgery must be older than 20 and single, the draft guideline said. They are also required to prove a persistent
(54) for a sex change, to live for at least five consecutive years full-time in the new gender role, and to engage in mental therapy for at least one year.
Before su
A. policies
B. places
C. opinions
D. services
[单项选择]确诊血肿后的处理措施首选
A. 穿刺抽出积血
B. 加压包扎
C. 手术引流
D. 止血药物
E. 冷敷
[多选题]无缝线路常备材料数量标准,下列说法正确的是( )。
A.每个工区备标准轨不少于6根,有缩短轨时另备1根;
B.夹板:每工区8块,钢轨不良适当增加;
C.螺栓及垫圈:每千米12套,钢轨不良适当增加;
D.胶接绝缘钢轨:每100千米10根;
E.短轨:每6.Om钻孔及7.0m无孔每工区各备1根,钢轨不良适当增加。
[单项选择]1989年以前,我国文物被盗情况严重,国家主要的博物馆中也发生了多起文物被盗案件,丢失珍贵文物多件。1989年后,国家主要的博物馆安装了技术先进的多功能防范系统,结果,此类重大盗窃案显著下降。这说明多功能防范系统对于保护文物安全起到了重要作用。
以下哪项如果为真,最能加强上述结论
A. 90年代被窃的文物中包括一件珍贵的传世工艺品。
B. 从90年代早期开始,私人收藏和小展馆中发生的文物失盗案件明显上升。
C. 上述多功能防范系统经过国家级的技术鉴定。
D. 在1989年到1999年之间,主要博物馆为馆内重要的珍贵文物所付的保险金有了较大幅度的增加。
E. 在20世纪90年代初,文物失盗案件北方比南方严重,因为南方经济较发达,保护文
[填空题]平行于织物长度方向的纱线称为(),平行于宽度方向的纱线称为纬纱。
[判断题]药品经营企业购进药品,应当建立并执行进货检查验收制,验明药品合格证明和其他标识,不符合规定要求的,不得购进和销售。
A.正确
B.错误
[单选题]高速铁路路基上设置的电杆、接触网支柱等设备,其内侧距线路中心线不宜少于( ),同时不得阻碍路基排水。(A 、3、A)[050101]
A.2.5m
B.3.1m
C.3.5m
D.4m
[单选题]线路发生故障时应立即使用列车无线调度通信设备通知车站值班员或列车司机紧急停车,同时在故障地点设置( )。
A.响墩
B.停车信号
C.慢行牌
D.防护员
[判断题]铁路运输费用结算方式非现金结算包括支票、云支付等。
A.正确
B.错误
[单选题] 在两线间堆放道砟、片石、砂子等线桥用料,料堆的高度不得高于钢轨顶面( )。
A. 100 mm
B. 200 mm
C. 300 mm
D. 500 mm
[判断题]认识世界的目的是为了改造世界。
A.正确
B.错误
[单选题]左心衰竭与支气管哮喘的主要鉴别点为
A.夜间呼吸困难
B.伴咳嗽
C.咳白色泡沫样痰
D.坐起时能够缓解呼吸困难
E.肺部干、湿性啰音
[单选题]点火能量必须达到一定的( )才能引起燃烧反应。
A.浓度
B.密度
C.强度
D.速度
[多选题]年薪通常包括以下部分( )。
A.基本收入
B.基薪
C.固定收入
D.效益收入
E.风险收入
[多选题]《中华人民共和国道路交通安全法》(2011年)规定,交通风险中,行人的不安全因素主要有以下( )方面?
A.违章穿行行车道
B.违章拦车扒车和违章跳车
C.走路速度慢
D.违章跨越隔离栏
[单选题]计算机中数据的表示形式是().
A.八进制
B.十进制
C.十六进制
D.二进制
[单项选择]直丝弓矫治器由Andrews发明于上世纪的()
A. 50年代初
B. 60年代初
C. 70年代初
D. 80年代初
E. 90年代初
[单项选择]男,40岁,诉右下后牙补料脱落一周。现病史:二年前,右下后牙因牙痛治疗,一年前此牙肿痛,不能咬合,自服消炎药后肿痛消失,一周前补料脱落检查:左下7牙合面洞,银补脱落,锌基完整,叩(+),颊侧牙龈有一窦道。做什么治疗()
A. 充填术
B. 盖髓术
C. 牙髓切断术
D. 干髓术
E. 根管治疗术
[多项选择]李某(17周岁)是甲公司招用的职工,双方订立了书面劳动合同。在试用期内,李某为发泄对公司的不满,在公司产生的饮料中放人了污物。请判断下列表述正确的选项
A. 李某与公司之间成立的劳动合同无效
B. 甲公司可以解除与李某的劳动合同
C. 李某与甲公司之间成立的劳动合同是可撤销的合同
D. 在试用期内,公司不能解除与李某的劳动合同
[多项选择]下列各选项中,属于汇总记账凭证的格式的包括()。
A. 汇总收款凭证
B. 汇总报销凭证
C. 汇总付款凭证
D. 汇总转账凭证