热门试题:
[单项选择]下面说法错误的是()。
A. 助焊剂可以说是一种腐蚀剂
B. 助焊剂分非腐蚀性助焊剂和腐蚀性助焊剂
C. 助焊剂不仅可以腐蚀性氧化膜,亦能腐蚀金属本身
D. 助焊剂不能腐蚀氧化膜,只能腐蚀金属本身
[单选题]治疗血虚证时,常在补血药中配用益气之品的机理是( )。
A..气能生血
B..气能行血
C..气能摄血
D..血能载气
[判断题]允许速度为120(不含)~160km/h线路,在直线上顺坡坡度不应大于1/(10υmax),在直线上顺坡的超高不应大于8mm。
A.正确
B.错误
[判断题]禁止在邻线和两线间躲避列车,现场休息时应远离线路,禁止在钢轨、枕木上和车辆下部休息。( )【《信号设备作业指导书》第84页,第10行,作业安全控制措施一.5】
A.正确
B.错误
[判断题]我们党来自于人民,为人民而生,因人民而兴,必须始终与人民心心相印、与人民同甘共苦、与人民团结奋斗。()
A.正确
B.错误
[判断题]工作许可人、工作负责人对有触电危险、检修(施工)复杂容易发生事故的工作,应增设专责监护人,并确定其监护的人员和工作范围。( )
A.正确
B.错误
[判断题]《国务院关于建立统一的城乡居民基本养老保险制度的意见》规定,对残疾人等缴费困难群体,县级人民政府为其代缴部分或全部最低标准的养老保险费。( )
A.正确
B.错误
[单项选择]ABO血型不合引起的新生儿溶血症最常见于()
A. 母亲为A型,新生儿为O型
B. 母亲为A型,新生儿为B型
C. 母亲为B型,新生儿为A型
D. 母亲为O型,新生儿为B型或A型
E. 母亲为AB型,新生儿为O型
[单项选择]检查屋面是否有渗漏、积水和排水系统是否畅通,应在雨后或持续淋水()h后进行。
A. 2
B. 6
C. 12
D. 24
[单选题]液压传动系统的执行元件是( )。
A.电动机
B.液压泵
C.液压缸或液压马达
D.液压阀
[判断题]硫化氢浓度达到4.5%-43.7%时,遇火能爆炸。( )
A.正确
B.错误
[单项选择]牙槽突骨折的主要临床特征是()
A. 牙龈出血肿胀
B. 牙齿脱落
C. 摇动一个牙时,邻近数个牙随之移动
D. 牙龈撕裂
E. 牙冠折断
[单项选择]极性有机化合物溶于()
A. 水
B. 苯
C. 四氯化碳
D. 氯仿
[单项选择]
考虑一个具有等距间隔的站点的基带总线LAN,数据输率为10Mbps;总线长度为1000m,传播速度为200m/μs,发送一个1000bit的帧给另一个站,从发送开始到接收结束的平均时间是 (49) ;如果两个站严格地在同一时刻开始发送,它们的帧将会彼此干扰,如果每个发送站在发送期间监听总线, (50) 可发现干扰。
(49)处填()。
A. 100
B. 105
C. 102.5
D. 110
[多选题]( )561细菌的形状主要有哪三种()。
A.球状
B.杆状
C.螺旋状
D.饼状
E.心状
[多选题]《细则》规定,列车发生火灾爆炸等事故时,应( ),并迅速与就近车站联系,向客调及上级有关领导报告情况。
A.调查取证
B.扑救火灾
C.抢救伤员
D.组织旅客撤离现场
[单选题]王某有四个儿子,分别是王大、王二、王三、王四。王某去世前指定王大为遗产执行人。王某去世后继承开始,遗产管理人为
A.王大
B.四个儿子
C.王某父母
D.王某妻子
[单项选择]下列哪些中学生的表现不属于心理行为问题()。
A. 过分依赖
B. 吸烟
C. 受到批评,心里不高兴
D. 一到考试身体就有不适反应
[判断题]对保证食品安全具有显著意义的关键控制环节的监控制度,良好实施并定期检查,发现问题及时纠正。
[单选题]安全带应定期检验,检验周期为()。
A.半年
B.1年
C.2年
D.1年半
[判断题]装设、拆除接地线可不在监护下进行。
A.正确
B.错误
[多项选择]下列有关欧式期权价格表述不正确的有()
A. 到期日相同的期权,执行价格越高,看涨期权的价格越低
B. 到期日相同的期权,执行价格越高,看跌期权的价格越高
C. 执行价格相同的期权,到期时间越长,看涨期权的价格越高
D. 执行价格相同的期权,到期时间越长,看涨期权的价格越低
[简答题]根据给定材料用200字左右的篇幅归纳目前我国在就业再就业工作中出现的问题。
[多选题]Anne Whitney, a sophomore at Colorado State University, first had a problem taking tests when she began college. "I was always well prepared for my tests. Sometimes I studied for weeks before a test. Yet I would go in to take the test, ouly to find I could not answer the questions correctly. I would blank out because of nervousness and fear. I couldn't think of the answer. My low grades on the tests did not show what I knew to the teacher." Another student in biology had similar experiences. He said: "My first chemistry test was very difficult. Than, on the second test, I sat down to take it, and I was so nervous that I was shaking. My hands were moving up and down so quickly that it was hard to hold my pencil. I knew the material and I knew the answers. Yet I couldn't even write them down! "
These two young students were experiencing something called test anxiety. Because a student worries and is uneasy about a test, his or her mind does not work as well as it usually does. The student cannot write or think clearly because of the extreme tension and nervousness. Although poor grades are often a result of poor study habits, somethnes test anxiety causes the low grades.
Recently, test anxiety has been recognized as a real problem, not just an excuse or a false explanation of lazy students.
Special university advising courses try to help students. In these courses, advisors try to help students by teaching them how to manage test anxiety. At some universities, students take tests to measure their anxiety. If the tests show their anxiety is high, the students can take short courses to help them deal with their tensions. These courses teach students how to relax their bodies, Students are trained to become calm in very tense situations. By controlling their nervousness, they can let their minds work at ease. Learned informatian then comes out without difficulty on a test.
An expert at the University of California explains: "With almost all stttderltS, relaxation and less stress are felt after taking our program. Most of them experience better control during their tests. Almost all have some improvement. With some, the improvement is very great."
To deal with this problem, students say they want to _____
A.ake a short course on anxiety
B.read about anxiety
C.be able to manage or understand their anxiety
D.take tests to prove they are not anxious
[单项选择]下列哪项不是超声成像
A. B型断层扫描
B. A型扫描
C. 彩色血流显像
D. 二次谐波成像
E. 三维重建成像
[单选题]积极引导宗教与社会主义相适应是指( )
A.要求教徒放弃有神论,信仰马克思主义
B.要求宗教在宪法和法律范围内活动
C.支持他们随意解释宗教教义
D.要求宗教参与国家政治和教育
[单项选择]以下有关封闭原理说法正确的是: ( )。
A. 系统内部必须形成有效的回路,达到有效控制管理活动过程的目的
B. 把管理对象看成一个有机的统一体,分析其构成要素及其要素与要素、要素与整体的关系,从总体上把握系统的特点和构成,从整体效应出发寻求解决问题的办法和措施,从而达到管理优化的目标
C. 一个有机系统必须对外开放,通过与外界进行物质、能量、信息的交换,补充系统内,部消耗散失的能量,克服熵增,才能保持活力,维持其生命力
D. 对管理系统外部环境和内部情况的不确定性因素要予以事先考虑,在做出决策、确定目标、制订计划等方面留有余地,使系统对未来的变化具有很强的应变能力
[单选题]客户设备若达到周期用量限制而无法使用,可以在平台上使用()功能来解除此限制。
A.激活设备
B.切换通信计划
C.周期用量重置
D.销卡
[填空题]
四氮唑比色法是用于()激素类药物含量测定的方法,它的()基团具有还原性,可以将四氮唑盐还原成有色甲。
[单选题]在曲线上明桥面的线路外轨超高设置中,在曲线外侧的桥枕下加垫木垫板的净厚不少于( )mm。(A 、3、A)[020102]
A.15
B.20
C.30
D.40
[多选题]【多选】LTE-Advanced系统的关键技术包括( )。[2分]
A.载波聚合技术
B.智能检测技术
C.中继技术
D.多点协作技术
[单选题]遇进站及线路所通过信号机灯光熄灭或遮住以及信号机灭灯时,夜间由车站派胜任人员按规定加挂( )。
A.防护信号灯
B.红色灯光
C.灯光熄灭
D.红色闪光灯光
[判断题]在采煤工作面,可一次装药,分组起爆。()
A.正确
B.错误