热门试题:
[单项选择]治疗阵发性室上性心动过速使用
A. 奎尼丁
B. 维拉帕米
C. 利多卡因
D. 普萘洛尔
E. 普鲁卡因胺
[单项选择]女性,58岁,均匀性肥胖,高血压病史6年,平时治疗情况不详。近1个月常出现头胀、头痛、心悸,1周前出现心前区闷痛,体力活动不受影响。
检查血压170/110mmHg,心界向左下扩大,心率50次/分,心底部S2亢进,哪一项检查暂时不宜进行
A. 血糖
B. 活动平板心电图
C. 胸片
D. 超声心动图
[单选题]五点法相对水深 0.0、0.2、0.6、0.8、1.0 的测点流速分别为 1.20m/s、1.50m/s、1.00m/s、0.60m/s、0.20m/s,则该垂线平均流速为()m/s。
A. 0.90
B. 0.91
C. 1.01
D. 1.02
[多项选择]心电图运动实验的方法包括()
A. 踏车运动实验
B. Master二级梯运动实验
C. 散步后的心电图
D. 长跑后的心电图
E. 平板运动实验
[判断题]9.车轮由轮箍和轮心组装而成,它们之间采用过盈配合,用压装方式紧套在一-起。( )
A.正确
B.错误
[单项选择]下列不属于药物的不良反应的是
A. 副作用
B. 过敏反应
C. 首关消除
D. 毒性反应
E. 继发反应
[简答题]强风情况下火灾扑救设置水枪阵地的要求有哪些?
[单选题]3.248. 第248题实名制充电卡客户输入密码连续错误( )次后,将导致锁卡。
A.3
B.5
C.7
D.9
[多选题]下列哪些建筑或场所当设有火灾自动报警系统和自动喷水灭火系统时,除顶棚外,其内部装修材料的燃烧性能等级可在附表的基础上降低一级:( )。 ( )
A.高度为58m的一类高层办公楼
B.二类高层民用建筑中座位数为600座的观众厅
C.高度为120m的高层民用建筑
D.高层民用建筑中座位数为1000座的会议厅
E.多层民用建筑
[填空题][单选题]依据《中国南方电网有限责任公司电力安全工作规程》,工作票应在规定时间内以纸质或电子文档形式送达许可部门,由值班负责人接收并审核。配电网无24小时值班负责人的则由()收票。
[单选题]()是人们对荣誉和耻辱的根本看法和态度。
A.人生观
B.价值观
C.世界观
D.荣辱观
[判断题]体外预应力钢束加固施工中,锚具与夹片应进行外观检查、硬度检验和静载锚固性能试验,锚具效率系数≥0.95。除应满足静载锚固性能要求外,尚应满足循环次数为100万次的疲劳性能实验要求。( )
A.正确
B.错误
[填空题]运营过程中,故障处理时如需要分合司控器钥匙,其分合间隔应保证在 及以上。
[单选题]AcroSwitchDS软交换调度系统不具备下列哪个功能:()
A.音视频通话
B.视频监控
C.企业通信录
D.视频会议
[多选题]混凝土施工,拆模作业应按()的原则逐一拆除。
A.后支先拆、先支后拆
B.先支先拆、后支后拆
C.先拆侧模、后拆底模
D.先拆非承重部分、后拆承重部分
E.略
F.略
[判断题]在变频器实际接线时,控制电缆应靠近变频器,以防止电磁干扰。()
A.正确
B.错误
[判断题]桥渡水文劣化等级评定中,桥下净空不足,洪水位在梁底以上,评定为A级AA等。《修规》附录七铁路桥隧建筑物状态评定标准
A.正确
B.错误
[单项选择]What does the man mean
A. He is not interested in going.
B. He wants to go with them.
C. He will invite his friends.
[单项选择]手术器械和用品、腹腔镜等属于()
A. 高度危险性物品
B. 中度危险性物品
C. 低度危险性物品
D. 需高水平消毒的物品
E. 需中水平消毒的物品
[单项选择]关于卵巢巧克力囊肿,下列描述哪项不对()
A. 半数以上累及双侧卵巢
B. 单发或多发囊肿
C. 囊肿常与邻近结构粘连
D. 囊肿直径多发大于6cm
E. 病理为黄体囊肿
[多选题]银行业金融机构记录的冠字号码信息至少应包含( )等素。
A.币值
B.业务类型
C.机具编号
D.日期和时间
E.版别
[单项选择]强度高的炉底形状为()。
A. 球缺形
B. 截锥形
C. 三角形
D. 方形
[填空题] There are many features that 【B1】 a movie as American, but perhaps the most 【B2】 is the theme of the loner-hero (孤胆英雄). In the western movie, which comes out of many 【B3】 of the American West, a typical figure is the lonesome cowboy. He wanders into a town and 【B4】 out its troubles. Then the strong and independent hero rides off into the sunset 【B5】 . Americans like this 【B6】 in their films because they are 【B7】 independent, and individualism 【B8】 a great deal with them. An individual, who is able to 【B9】 the evils of the world, or of a small town, is someone to admire.
Even the gangster movie, a very popular 【B10】 of the typical American film, usually has a hero. 【B11】 he is a lawman out to catch the criminals or a gangster who suddenly sees the light and tries to go 【B12】 . During the violence-ridden period of Prohibition in the 1920s, the gangster movie 【B13】 in popularity. These films kept the same 【B14】 as the western — the bad cannot triumph. One good person can save the
A. A.lonely
B.solitarily
C.alone
D.isolated
[单选题]下列工作中,不属于个贷中心用信审核岗位的工作职责是()
A.放款前电话核实工作
B.审核抵押登记、C3放款、会计放款、档案归档等环节资料的合规性
C.指导落实信贷政策和信贷决策,对合规审核发现的问题及时与经营行沟通并督促整改
D.开展合作机构的担保额度使用管理
[简答题]
某机器设备中一重要标准结构件,已知其疲劳极限,σ-1=300MPa,其循环基数No=107,另m=9,该构件已运行了400天,分别在对称循环交变应力240MPa、300MPa、320MPa和500MPa下运行,且在这4种对称循环交变应力下每天出现的次数为890次、550次、280次、90次。
请依题意分别回答以下问题:
(1)求在4种循环交变应力下的疲劳循环次数。
(2)该标准构件的剩余疲劳寿命为多少
[单选题]将已经分区成功的磁盘中的一个分区作为文件系统使用,需要进行( )操作。
A.重新分区
B.建立目录
C.初始化并建立文件系统
D.直接存储文件
[单选题]进入现场作业区必须。
A.有人陪同
B.戴安全帽
C.穿工作服
[简答题]根据国际半导体技术路线图组织的预测,未来集成电路有哪两个发展方向?
[判断题]高锰钢整铸辙叉,叉心宽40mm断面处,辙叉心垂直磨耗(不含翼轨加高部分),50kg/m及以下钢轨,其他站线上超过10mm为轻伤。( )
A.正确
B.错误
[单选题]母联断路器电流相位比较式母线差动保护,当母联断路器和母联断路器的电流互感器之间发生故障时,()。
A.将会切除非故障母线,而故障母线反而不能切除
B.将会切除故障母线,非故障母线不能切除
C.将会切除故障母线和非故障母线
[多选题]9.自动售检票系统(AFC)是基于( )等技术,实现轨道交通售票、检票、计费、收费、统计、清分、管理等全过程的自动化系统
A.A.计算机
B.B.通信
C.C.网络
D.D.自动控制
[单选题]( )应掌握接入高压配电网的分布式电源并网点开断设备的状态。
A.变电运维部门
B.电网调度控制中心
C.营销部门
D.线路运维部门
[单项选择]下列关于线性表的叙述中,不正确的是( )。
A. 可以有几个节点没有前件
B. 只有一个终端节点,它无后件
C. 除根节点和终端节点,其他节点都有且只有一个前件,也有且只有一个后件
D. 线性表可以没有数据元素
[不定项选择题]共用题干
So Many"Earths"
The Milky Way(银河)contains billions of Earth-sized planets that could support life.That's the finding of a new study.It draws on data that came from NASA's top planet-hunting telescope.
A mechanical failure recently put that Kepler space telescope out of service.Kepler had played a big role in creating a census of planets orbiting some 170,000 stars.Its data have been helping astronomers predict how common planets are in our galaxy.The telescope focused on hunting planets that might have conditions similar to those on Earth.
The authors of a study,published in The Proceedings of the National Academy of Sciences,conclude that between 14 and 30 out of every 100 stars,with a mass and temperature similar to the Sun,may host a planet that could support life as we know it.Such a planet would have a diameter at least as large as Earth's,but no more than twice that big.The planet also would have to orbit in a star's habitable zone.That's where the surface temperature would allow any water to exist as a liquid.
The new estimate of how many planets might fit these conditions comes from studying more than 42,000 stars and identifying suitable worlds orbiting them.The scientists used those numbers to extrapolate(推算) to the rest of the stars that the telescope could not see.
The estimate is rough,the authors admit.If applied to the solar system,it would define as habitable a zone starting as close to the Sun as Venus and running to as far away as Mars.Neither planet is Earthlike (although either might have been in the distant past).Using tighter limits,the researchers estimate that between 4 and 8 out of every 100 sunlike stars could host an Earth-sized world.These are ones that would take 200 to 400 days to complete a yearly orbit.
Four out of every 100 sunlike stars doesn't sound like a big number.It would mean,however,that the Milky Way could host more than a billion Earth-sized planets with a chance for life.
The main task of the Kepler space telescope is to find out planets with similar conditions to Earth's.
A.Right
B.Wrong
C.Not mentioned
[填空题]用测量排放频率来显示瞬时流量的方法,称作()