热门试题:
[单选题]电e宝交费、结算，客户（）小时均可交费，较为安全、方便。
A.A.24
B.B.12
C.C.18
[判断题]（ ）315，BC004下钻操作时，右手扶刹把，左手合低速离合器气开关起空车，空吊卡升过转盘面2印后改换高速，眼看滚筒钢丝绳排列。
A.正确
B.错误
[判断题]机构具有确定运动的条件是自由度大于0,且机构的自由度个数等于原动件的个数。: ( )
A.正确
B.错误
[单选题]当水压升至0.3MPa时,即可打开出水球阀向火场供水。
A.对
B.错
[多项选择]维护国家安全主要包括以下方面的内容：( )。
A. 积极防范危害国家安全的违法犯罪行为的发生
B. 及时发现和制止危害国家安全的违法犯罪行为，将其遏制在萌芽状态，以避免造成危害国家安全的严重后果
C. 坚决打击和惩治危害国家安全的违法犯罪分子，使他们得到应有的惩罚，同时也警戒其他不法分子
D. 积极防范和制止危害社会治安秩序的违法犯罪行为
[单项选择]外伤性颈脊髓损伤未行坚强固定的早期康复措施中，错误的是（）
A. 由一名医护人员进行定时翻身
B. 病情稳定后采用清洁导尿
C. 注意颈部固定或牵引
D. 注意逐步抬高床头
E. 加强营养
[单项选择]女性，32岁。2年来下肢反复出现瘀点，间有鼻出血与牙龈出血来门诊检查。体检：下肢散在紫癜和瘀斑，肝脾不肿大。化验：Hb110g/L，WBC5.1×109/L，PLT35×109/L，骨髓涂片巨核细胞296个／全片，其中颗粒型占90%。血小板减少发生机制是（）
A. 血小板生成减少
B. 血小板消耗过多
C. 血小板释放减少
D. 血小板破坏过多
E. 血小板分布异常
[判断题]在直流电路中,常用棕色表示正极。(1.0分)
A.正确
B.错误
[单选题]（）住房城乡建设主管部门负责全国危大工程安全管理的指导监督。
A.国务院
B.省政府
C.市政府
D.县政府
E./
F./
[单选题]对已爆现场要坚持( )原则先勘查现场
A.后搜爆排爆
B.先搜爆排爆再勘查现场勘查
C. 现场和搜爆排爆同时进行
D.已经爆炸,不需要再搜爆排爆,只需勘察现场
[单选题]以下所列信息中不是电气图功能和用途是(____)。
A.系统图
B.电气原理图
C.电气接线图、接线表
D.主电路图
[多项选择]房屋室内整体类地面包括（）地面。
A. 陶瓷锦砖
B. 水泥砂浆
C. 水磨石
D. 缸砖
E. 细石混凝土
[判断题]按封锁区间办法向不应答站发出列车时，该列车应在不应答站的进站信号机外停车，判明不应答原因及准备好进路后，再行进站。司机或车站值班员应将经过情况报告列车调度员。
A.正确
B.错误
[判断题]使用电动工具,不得手提导线或转动部分。
A.正确
B.错误
[单项选择]设f（x）是连续函数，F（x）是f（x）的原函数，则（）。
A. 当f（x）是奇函数时，F（x）必是偶函数
B. 当f（x）是偶函数时，F（x）必是奇函数
C. 当f（x）是周期函数时，F（x）必是周期函数
D. 当f（x）是单调增函数时，F（x）必是单调增函数
[单选题]同一车站到开或同一径路运行的列车不得编用相同的车次，有些列车在途中几次变换上下行方向，改变车次有困难时，可使用不超过( )车次运行到终点站。
A.两个
B.四个
C.六个
D.八个
[单项选择]"Before the operation, I would look at someone and all I could see for their face was jelly," says Jonathan Wyatt "Now, I can see people"s faces." The 66-year-old is one of six people in the world to receive gene therapy for a【C1】______ type of inherited eye disease【C2】______ choroideremia (an eye disease). The first published【C3】______ of the trial, released today, suggest that【C4】______ people"s genes can stop the disease from causing blindness—and【C5】______ sight in those whose vision has become【C6】______. Choroideremia is caused by【C7】______ in the CHM gene In those who have the disease, a 【C8】______ of REP-1 means that cells in the eyes stop working and slowly begin to【C9】______ causing blindness. Enter gene therapy, which uses a virus to insert a【C10】______ copy of a gene into cells with a gene defect and could【C11】______ be used to treat many genetic conditions. Robert MacLaren of the University of Oxford and his colleagues decided to see if it could【C12】______ choroideremia. Starting two years ago with Wyatt, they【C13】______ a virus carrying a corrective copy of the CHM gene into the eyes of people with choroideremia Today the team【C14】______ that of the six people who received the treatment six months【C15】______ or longer, all have described【C16】______ in their vision. Still, the long-lasting effects of the treatment remain【C17】______. Wyatt had the treatment first, so can【C18】______ that the benefits seem to last two years, 【C19】______ he"s just one case. The treatment also can"t replace cells that have been【C20】______ destroyed.【C7】
A. associations
B. responses
C. defects
D. conditions
[多选题]对轨头核伤校对应采用（ ）进行。
A.多方位
B.轨底反射法
C.多种方式
D.多位置法
[单选题]右房肥大的心电图表现为
A.P波尖而高耸
B.P波低平
C.P波呈双峰状
D.P波增宽
E.P波出现切迹
[单选题]“镇江肴肉”的拼摆式样一般用采用()。
A.馒头形
B. 四方形
C.菱形
D.桥型
[判断题]氧枪的操作氧压是指喷嘴出口处的压力。
A.正确
B.错误
[判断题]环境温度保持在24℃–25℃，蓄电池具有最佳的使用寿命和性能。环境温度低于25℃，蓄电池的充电效率和性能会降低。温度高于25℃，蓄电池的寿命将缩短。
A.正确
B.错误
[单项选择]When you have a job interview, you should ______.
A. wear clothes which are too casual
B. Wear clothes which are too formal
C. wear clothes which are expensive
D. wear fight clothes
[多选题]正确地理解地理环境同人类社会关系原理的意义,要求我们:( )
A.合理地开发自然资源,减少资源浪费
B.不要破坏生态平衡,要保护人和自然的协调关系
C.尽快地开发自然资源,以促进生产发展
D.要保护自然生态环境,减少环境污染
[多项选择]十九大报告指出，要建立全面（）的预算制度，全面实施绩效管理。
A. 规范透明
B. 标准科学
C. 约束有力
D. 监督有力
[填空题]Scientists have discovered that plants themselves produce many poisonous chemicals for{{U}} (36) {{/U}}against insects. But insects have developed ways of{{U}} (37) {{/U}}with them and, in fact, have been eating plants for about 250 million years. Now insects are using these same{{U}} (38) {{/U}}to deal with man-made poi sons--insecticides. This is why{{U}} (39) {{/U}}of insects to insecticides has developed so{{U}} (40)
{{/U}}
What should be done Scientists studying the problem suggest that farmers use less insecticides. At the moment, farmers{{U}} (41) {{/U}}spray crops as a{{U}} (42) {{/U}}against problems that are caused by large number of pests. They should, instead, spray only where pests have actually been seen. Secondly, farmers could use a{{U}} (43) {{/U}}of two or three insecticides at once.{{U}} (44) {{/U}}
The most surprising suggestion, perhaps, is that at certain times of the year,{{U}} (45) {{/U}}. The new insects will mate with those which
[单项选择]
W: Can I help you
M: Yes. I bought this radio yesterday, but it doesn’t work now. I’d like to exchange it for another one.
W: Oh, dear. Yes, of course. Have you got your receipt
M: Yes, here it is.
W: Thank you. Just a moment, please.
Where does this conversation take place （ ）
A. In a store.
B. In a factory.
C. In a museum.
[单项选择]等级货物运价是在（）基础上附加或附减一定百分比的形式构成的。
A. 指定商品运价
B. 普通货物运价
C. 集装货物运价
D. 比例运价
[判断题]重量分析中对形成胶体的溶液进行沉淀时，可放置一段时间，以促使胶体微粒的胶凝，然后再过滤。
[单选题] (单选题)社会主义的根本任务是:()
A. 群众运动
B. 阶级斗争
C. 发展生产力
D. 掌控意识形态领导权
[判断题]氯化氢的分子式是HCL2。( )解析:(HCL)
A.正确
B.错误
[多项选择]热辐射光源主要包括（）。
A. 普通白炽灯
B. 荧光灯
C. 卤钨灯
D. 场致发光光源
[单选题]井塌发生的原因有地层对钻井液中( )反应比较敏感。
A.固相含量
B.自由水
C.pH
D.含砂
[单选题] 采用焦度计测定成镜的后顶焦度,使双侧镜圈的下缘稳定地接触档板,是为了( )。
A.测定球镜
B.测定柱镜
C.减少柱镜轴位误差
D.测定瞳距
[单项选择]第二肝门的解剖结构组成是（）
A. 肝左，肝中，肝右静脉
B. 门静脉，肝静脉及肝门淋巴结
C. 门静脉及肝静脉
D. 门静脉，下腔静脉及胆管
E. 门静脉，肝动脉及胆管
[单项选择]报纸设计方案拟定后，选择试刊的时间需要注意（）。
A. 最好在重大节日期间试刊
B. 最好在重要活动、重要会议举行时试刊
C. 不要选在特殊的日子试刊
D. 不要在正式出版前试刊
