热门试题:
[单选题]当超声波传入皮肤后，组织细胞间的振动摩擦使机械能变成()能。
A.动
B.热
C.电
D.光
[判断题]同一抄表作业人员可对同一抄表段一直抄表。
A.正确
B.错误
[单项选择]上消化道出血最常见病因是（）
A. 胃癌
B. 慢性胃炎
C. 消化性溃疡
D. 肝硬化
E. 食管炎
[判断题]单独的可调压直流电源对电机电枢供电,控制电源电压既可使电机平滑起动,又能实现调速。
A.正确
B.错误
[判断题]单班单司机值乘的货物列车在区间发生分离停车时，司机应立即请求车站派人协助处理，并按规定做好机车及车辆的防溜。
A.正确
B.错误
[判断题]车钩中心水平线的高度差不超过75mm。
A.正确
B.错误
[单选题]《广西电网有限责任公司内部治安及反恐怖防范管理细则》规定,公司一级重点目标是( )。
A.500千伏变电站、输电线路
B.220千伏以上、500千伏以下跨省跨区变电站、相关输电线路
C.220千伏以上、500千伏以下变电站和输电线路(不含跨省跨区变电站和输电线路)
D.110千伏以上、220千伏以下变电站和输电线路(不含跨省跨区变电站和输电线路)
[单选题]可用于治疗阿米巴痢疾的抗生素是( )
A.青霉素
B.链霉素
C.头孢氨苄
D.土霉素
E.大观霉素
[判断题]后退对标执行要求司机在原驾驶端按照规定驾驶模式，以小于3km/h的速度退行至站台规定停车位置。
A.正确
B.错误
[单选题]关于帕金森病的描述，下列正确的是
A. 1817年由美国的医生首先描述
B. 1817年由英国的医生首先描述的
C. 1817年由德国的医生首先描述的
D.1817年由俄国的医生首先描述的
E. 1817年由法国的医生首先描述的
[单项选择]男性，60岁，患慢性肾炎10余年，经中西医结合治疗病情稳定，但近1年来逐渐加重，食欲下降，贫血，化验血肌酐已进入肾衰竭期，这时血肌酐的水平是
A. 278～450μmol/L
B. 178～278μmol/L
C. ＜178μmol/L
D. 450～707μmol/L
E. ＞707μmol/L
[判断题]高压设备上工作，在手车开关拉出后，应观察隔离挡板是否可靠封闭。
A.正确
B.错误
[不定项选择题]Last Thursday, the French Senate passed a digital services tax, which would impose an entirely new tax on large multinationals that provide digital services to consumers or users in France. Digital services include everything from providing a platform for selling goods and services online to targeting advertising based on user data, and the tax applies to gross revenue from such services. Many French politicians and media outlets have referred to this as a “GAFA tax,” meaning that it is designed to apply primarily to companies such as Google, Apple, Facebook and Amazon- in other words, multinational tech companies based in the United States.
The digital services tax now awaits the signature of President Emmanuel Macron, who has expressed support for the measure, and it could go into effect within the next few weeks. But it has already sparked significant controversy, with the Unite Sates trade representative opening an investigation into whether the tax discriminates against American companies, which in turn could lead to trade sanctions against France.
The French tax is not just a unilateral move by one country in need of revenue. Instead, the digital services tax is part of a much larger trend, with countries over the past few years proposing or putting in place an alphabet soup of new international tax provisions. These have included Britain’s DPT (diverted profits tax), Australia’s MAAL (multinational antiavoidance law), and India’s SEP (significant economic presence) test, to name but a few. At the same time, the European Union, Spain, Britain and several other countries have all seriously contemplated digital services taxes.
These unilateral developments differ in their specifics, but they are all designed to tax multinationals on income and revenue that countries believe they should have a right to tax, even if international tax rules do not grant them that right. In other words, they all share a view that the international tax system has failed to keep up with the current economy.
In response to these many unilateral measures, the Organization for Economic Cooperation and Development (OEC
D) is currently working with 131 countries to reach a consensus by the end of 2020 on an international solution. Both France and the United States are involved in the organization’s work, but France’s digital services tax and the American response raise questions about what the future holds for the international tax system.
France’s planned tax is a clear warning: Unless a broad consensus can be reached on reforming the international tax system, other nations are likely to follow suit, and American companies will face a cascade of different taxes from dozens of nations that will prove burdensome and costly.
The French Senate has passed a bill to_____.
A.regulate digital services platforms
B.protect French companies’ interests
C.impose a levy on tech multinationals
D.curb the influence of advertising
[单选题]—年3月1日，发生在中国云南省昆明市昆明火车站，造成上百人伤亡的事件定性为（ ）。
A.暴力恐怖袭击事件
B.严重刑事案件
C.暴力事件
D.打砸抢烧事件
[简答题]Radiation occurs from three natural sources: radioactive material in the environment, such as in soil, rock, or building materials; cosmic rays; and substances in the human body, such as radioactive potassium in bone and radioactive carbon in tissues. These natural sources account for an exposure of about 100 millirems a year for the average American.
The largest single source of man-made radiation in medical x-rays, yet most scientists agree that hazards from this source are not as great as those from weapons-test fallout, since strontium-90 and carbon-14 become incorporated into the body, hence delivering radiation for an entire lifetime. (46) The issue is, however, by no means uncontroversial; indeed, the last two decades have witnessed intensified examination and dispute about the effects of low-level radiation.
A survey conducted in Britain confirmed that an abnormally high percentage of patients suffering from arthritis of the spine who had been treated with x-ra
[多选题]侦检警戒必须根据灾害类别、特点,合理使用侦检器材,设定警戒区域。( )
A.易燃易爆区域,必须依据侦检结果划定警戒区域
B.严禁无关人员和车辆进入
C.进入易燃、易爆区域,禁止使用非防爆侦检器材
D.易燃、易爆事故现场警戒区域内,必须禁绝一切可能引起燃烧、爆炸的条件。
[单选题]在处理危化品运输车灾害事故时，如何选择集结点？
A.下风方向
B.上风方向
C.上风方向或侧上风方向
D.侧下风方向
[单项选择]Not until the bell rang （） in.
A. do they come
B. came they
C. did they come
D. they came
[单选题](选择题).瓦楞子炮制后质地( )。
A.软硬皆有
B.柔软
C.坚硬
D.酥脆
[填空题]空调机组选用全封闭制冷压缩机，制冷剂为（ ），以毛细管为节流元件，采用全封闭结构，型式为（ ）式。
[单项选择]The development of the transistor and integrated circuits revolutionized the electronics industry by allowing components to be packaged more (densely).
A. compactly
B. inexpensively
C. quickly
D. carefully
[填空题]MSTP的多业务特性主要支持体现在支持（）。
[单项选择]推动区域协调发展，缩小区域发展差异是“协调”发展理念的要求。推进西部大开发是推动区域协调发展的总体战略之一。西部大开发战略开始于哪一年（）。
A. 1999年
B. 1998年
C. 2000年
D. 2001年
[单项选择]在MODRTE页面标题上的MOD有何含义（）？
A. 原来的工作数据已经被修改，执行
B. 原来的工作数据已经被修改，未执行
C. 目的机场为MOD
[判断题]紧急情况下，可以从车辆下部或车钩处通过。
A.正确
B.错误
[判断题]2.15. 第15题
电缆输送机具有结构紧凑、重量轻、推力大的特点,可有效保证电缆敷设质量。
A.正确
B.错误
[单选题]某山羊分娩，努责半小时，仅见胎儿右前蹄露出阴门外，产道检查发现，胎儿头颈姿势无异常，左前肢向后伸展，位于胎儿躯干之下，难产的原因是
A.肘关节屈曲
B.肩关节屈曲
C.腕关节屈曲
D.头颈捻转
E.头颈侧弯
[单选题] [T]AA006 4 1 2
汽油、柴油在使用中,用实际胶质作为判断其( ),能否继续使用与储存的依据。
A.安全性
B.流动性
C.蒸发性
D.能否生成胶质的倾向[T/]
[填空题]在执行停车上下时，车列牵出、向空线或向不进行连挂的有车线推进作业时，应在车列（ ）后下车。
[单选题]机动车驾驶人( )
A.驾驶机动车时可以饮食，但不准吸烟
B.驾驶机动车时不准拨打、接听手持电话
C.少量饮酒后可以驾驶机动车
[多选题] 甲向被害人乙的房间开枪射击， 但乙已于2小时以前避开， 因此未 遭杀害， 此案中甲
A.构成故意杀人未遂
B.属于作为犯罪
C.属于不作为犯罪
D.甲的行为不构成犯罪
[多项选择]湿热灭菌的影响因素是
A. 药物性质
B. 灭菌时间
C. 蒸汽性质
D. 细菌的种类
E. 细菌的数量
[单选题]某患者，突发呼吸困难、发绀，右胸呈鼓音，呼吸音消失，最可能的诊断为
A.肺梗死
B.右侧大叶性肺炎
C.右侧胸腔积液
D.急性左心衰
E.右侧气胸
[单项选择]被鲁迅称为“实在是小说史上的一大变迁”（《中国小说的历史的变迁》的是（）。
A. 六朝志怪小说
B. 宋代话本小说
C. 唐代传奇小说
D. 南北朝志人小说
[简答题]画出LF31T-40/3.5型螺杆压缩机自耦降压启动主电路图？并标注各元件符号？
[单项选择]新型隐球菌脑膜炎患者出现听、面神经和动眼神经同时受损的原因主要是（）。
A. 脑干神经核团的损害
B. 颅底蛛网膜的粘连致颅神经受损
C. 炎性介质致颅神经受损
D. 免疫介导间接损伤颅神经
E. 新型隐球菌直接损害颅神经
[判断题]《铁路货运票据电子化作业办法》文件规定：车站对客户提报的需求实货核实，在货运站系统确认后，进行运单受理。( )
A.正确
B.错误
