热门试题:
[填空题]电气传动的基本特性和有关电气控制的特性是电气设计的技术条件的主要内容。( )
[单项选择]以下不属于路基竖向填筑法特点的有（）。
A. 从路基一端或两端按横断面全部高度，逐步推进填筑
B. 填土过厚，不易压实
C. 是路基填筑的常用方法
D. 一般要进行沉降量及稳定性测定
[单项选择]
Geography is the study of the relationship between people and the land. Geographers(地理学家) compare and contrast (61) places on the earth. But they also (62) beyond the individual places and consider the earth as a (63) . The word geography (64) from two Greek words, ge, the Greek word for "earth" and graphein, (65) means "to write." The English word geography means "to describe the earth." (66) geography books focus on a small area (67) a town or city. Others deal with a state, a region, a nation, or an (68) continent. Many geography books deal with the whole earth. Another (69) to divide the study of (70) is to distinguish between physical geography and cultural geography. The former focuses on the natural world; the (71) starts with human beings and (72) how human beings and their environment act (73) each other. But when geography is considered as a single su
A. neither
B. either
C. one
D. each
[单项选择]中度慢性肝炎的特征性病变是（）
A. 点状坏死
B. 桥接坏死
C. 碎片状坏死伴桥接坏死
D. 大片坏死
[多选题]下列属于集中器功能的是( )
A.数据采集
B.事件记录
C.数据传输
D.终端维护
[单选题]对于新投运的线路，应执行GBJ223，按有关规定把好验收移交关（）
A.正确
B.错误
[多选题]进行高原缺氧地区训练,要求做到()。
A.. 合理制定训练计划
B.. 科学灵活组训
C.. 搞好训练保障
D.. 做好现场监护
E.. 加强医疗监护
[单项选择]集成电路插装前对引线要（）进行整形。
A. 逐个
B. 个别
C. 整排
D. 一部分
[单选题]秦始皇巩固中央集权的措施中哪一点与商鞅变法的内容不一致？（ ）
A.严明法制
B.废除分封
C.焚书坑儒
D.车同轨，书同文
[判断题]黑恶势力是社会毒瘤,严重破坏经济社会秩序,侵蚀党的执政根基。( )
A.正确
B.错误
[单项选择]换热器中冷热流体一般为逆流流动，这主要是为了（）
A. 提高传热系数；
B. 减少冷却剂用量；
C. 提高对数平均温度差；
D. 减小流动阻力。
[判断题]旅客列车、通勤列车以及折角（返）列车的机车，在车站转向挂头作业，可比照出入段本务机车挂头办理，不派调车指挥人显示起动信号和连挂车辆的有关信号
A.正确
B.错误
[单项选择]以下关于公开密钥体制不正确的是 ______。
A. 用加密密钥PK对明文X加密后，再用解密密钥SK解密，即得明文，反之亦成立
B. 公开密钥机制能实现身份认证
C. 从已知的公钥(PK)不能推导出私钥(SK)
D. 加密密钥能用来解密
[单选题]停车信号的鸣示方法为（ ）。
A.一长两短声
B.两长一短声
C.一长三短声
D.连续短声
[多项选择]错误的操作有
A. 将AgNO3滴定液装在白色的试剂瓶中
B. 将NaOH滴定液装在塑料瓶中
C. 将K2Cr2O7标定Na2S2O3溶液时用碘量瓶
D. 上述滴定中(C)，淀粉指示剂宜在近终点时加入
E. 用EDTA直接滴定法测定Al3+盐，滴定速度应快
[单项选择]在长输管道的阴极保护中，（）是主要的极化电源。
A. 硅整流器
B. 恒电位仪
C. 蓄电池组
D. 直流发电机
[多项选择]脱硫系统需要投入的循环泵的数量和（）有关。
A. 锅炉负荷的大小；
B. 烟气中二氧化硫的浓度；
C. 入炉煤的含硫量；
D. 吸收塔液位。
[单选题]知识点：妊娠诊断
阴道B型超声最早确诊妊娠在
A.3 -4 周
B.4-5 周
C.5-6 周
D.7-8 周
E.9-10 周
[单选题]社会主义建设总路线即“( ),多快好省的建设社会主义”。
A.乘风破浪,力争上游
B.鼓足干劲,力争上游
C.全力以赴,铆足干劲
D.全心全力,团结共进
[单选题]国网公司电网资产收购管理办法规定,限上项目是指项目单项收购投资金额为(____)。
A.100万元以下;
B.1000万元以下;
C.5000万元以下;
D.2亿元及以上。
[单项选择]第一家证券投资基金诞生于（）。
A. 美国
B. 英国
C. 德国
D. 法国
[单项选择]具有补肾助阳、祛风除湿功效的药物是（）
A. 巴戟天
B. 肉苁蓉
C. 郁李仁
D. 桑寄生
E. 当归
[多选题]多选题:人工现场办理进路所需携带的备品包括( )。
A.道岔钥匙、手摇把
B.钩锁器、钩锁器钥匙
C.加力扳手、信号灯
D.无线手持台、手电筒
[单项选择]具有结合抗原能力的抗体可变区分子片段称为（）
A. 嵌合抗体
B. 小分子抗体
C. 双特异性抗体
D. 单克隆抗体
E. 多克隆抗体
[单项选择]女性，39岁。发现右上睑黄色斑块6个月。查体：斑块位于近内眦部的上睑皮肤上，面积约0.5cm×0.5cm，突出皮肤表面，无痛痒症状。最可能的诊断是（）。
A. 粉瘤
B. 睑黄瘤
C. 皮样囊肿
D. 葡萄酒色斑
E. 脂肪瘤
[单选题]逻辑检查功能开启/关闭时，应以（ ）为单元，两端站车站值班员按操作权限分别进行开启/关闭操作。
A.电务管辖
B.区间
C.闭塞分区
D.区段
[判断题]车货总重超限50%--80%(含80%)的部分,按基本费率的6倍计收车辆通行费。( )
A.正确
B.错误
[单项选择]《自贡盐业生产忧喜录》这篇调查报告的标题形式是
A. 公文式标题
B. 提问式标题
C. 结论式标题
D. 新闻式标题
[填空题]进站.出站.进路.调车.驼峰.驼峰辅助信号机及线路所的通过信号机,均以显示( )信号为定位
[单选题]高空作业人员必须穿挂（ ）？
A.对讲机
B.安全带
C.救生衣
D.红闪灯
[填空题]
The term home schooling or home tuition, as it is called in
England, means educating children at home or in places other than a{{U}} (1)
{{/U}}such as a public or private school. There are many reasons why parents
choose home schooling for their children. Some parents are{{U}} (2)
{{/U}}the quality of education in public schools. Others do not want their
children to have to worry about{{U}} (3) {{/U}}, or social pressure from
friends. These parents fear this type of pressure will lead to{{U}} (4)
{{/U}}such as smoking, drinking alcohol and taking drugs. {{U}} (5)
{{/U}}from other students is another concern. In 1996, it was estimated that
between 120,000 and{{U}} (6) {{/U}}children are being home schooled in
the U.S.
Professor Jane describes parents who teach their
children at home as either ideologues or pedagogues. Ideologues tend to view
home school as opportunities to{{U}} (7) {{/U}}using pre-determined
curricula, textb
[单选题]股骨颈骨折患者牵引时，做法错误的是（）
A.每天消毒针孔处
B.牵引须保持一定的牵引力
C.注意防止压迫腓总神经
D.摆正骨盆，患肢取外旋中立位
[多选题]划线是根据图纸要求,在毛坏或半成品上划出加工界线的一种操作。零件在刀工前进行划线操作的作用有哪些（ ）。
A.明确各加工面的加工位置
B.确定各加工面的加工余量
C.通过划线及时发现和剔除不符合图纸要求的毛坯
D.通过合理的“找正”及“借料”,补救存在适度缺陷的毛坯,提高半成品毛坯的利用率
[判断题]内在价值是创造价值的潜在能力，外在价值是发挥自身创造力所创造出来的现实价值。
A.正确
B.错误
[不定项选择题]共用题干
Warm People Likely to Keep Cold at Bay
Staying positive through the cold season could be your best defense.against getting ill,new study findings suggest.In an experiment that exposed healthy volunteers to a cold or flu virus,researchers found that people with a generally sunny disposition were less likely to fall ill.
The findings,published in the journal Psychosomatic Medicine,build on evidence that a"positive emotional style"can help ward off the common cold and other illnesses.Researchers believe the reasons may be both objective as in happiness boosting immune function and subjective as in happy people being less trou- bled by a scratchy throat or runny nose.
"People with a positive emotional style may have different immune responses to the virus,"explained lead study author Dr.Sheldon Cohen of Carnegie Mellon University in Pittsburgh."And when they do get a cold,they may interpret their illness as being less severe."
Cohen and his colleagues had found in a previous study that happier people seemed less susceptible to catching a cold,but some questions remained as to whether the emotional trait itself had the effect.
For the new study,the researchers had 193 healthy adults complete standard measures of personality traits,self-perceived health and emotional"style".Those who tended to be happy,energetic and easy-going were judged as having a positive emotional style,while those who were often unhappy,tense and hostile had a negative style.
The researchers gave them nasal drops containing either a cold virus or a particular flu virus.Over the next six days,the volunteers reported on any aches,pains,sneezing or congestion they had,while the researchers collected objective data,like daily mucus production.Cohen and his colleagues found that based on objective measures of nasal woes,happy people were less likely to develop a cold.
The researchers chose 193 adults who had a negative style for the study.
A.Right
B.Wrong
C.Not mentioned
