热门试题:
[判断题]有分布式电源接入的电网管理单位应及时掌握分布式电源接入情况，并在系统单线图上标注完整。
A.正确
B.错误
[填空题]将电气设备正常时不带电的，但可能带有危险电压的金属外壳、构架等，与埋设在地下的接地极用金属导线连接起来构成的接地，叫（）。
[单项选择]阀控型锚机的闭式液压系统采用高位油箱的目的是（）。
A. 提高系统效率
B. 加强油液冷却
C. 改善泵吸入条件
D. 改善叶片马达的工作条件
[判断题]《技规》第358条规定：当超长列车尾部停在警冲标外方，接入相对方向的列车时，在进站信号机外制动距离内进站方向为超过6‰的下坡道，而接车线末端无隔开设备，须使列车严格控制速度，再接入站内。
A.正确
B.错误
[单项选择]A fire is discovered in the forepeak of a vessel at sea. The wind is from ahead at 35 knots. You should（）.
A. remain on course and hold speed
B. change course and put the stern to the wind
C. change course to put the wind on either beam and increase speed
D. remain on course but slack the speed
[单选题]反复肺部感染造成肺气肿的主要机制是：
A.使α 1-抗胰蛋白酶的活性降低
B.破坏小支气管壁软骨而失去支架作用
C.使细支气管管腔狭窄而形成不完全阻塞
D.肺组织供血减少致营养障碍而使肺泡壁弹性减退
E.使白细胞和巨噬细胞释放的蛋白分解酶增加而形成肺大泡
[单项选择]杀灭物体表面病原微生物的方法称为（）。
A. 消毒
B. 灭菌
C. 无菌操作
D. 防腐
E. 无菌
[单选题]氨双级压缩机开机前,若中间冷却器压力超过( )Mpa应进行排液减压。
A.0.2
B.0.3
C.0.4
D.0.5
[判断题]上道前或跨越线路时，必须严格遵守“一停、二看、三通过”和“手比、眼看、口呼”的规定，作业人员可随意穿越线路。
A.正确
B.错误
[单项选择]没有行政强制执行权的行政机关申请人民法院强制执行的期限是以自当事人法定履行期限届满之日起（）个月内。
A. 一
B. 二
C. 三
D. 六
[不定项选择题]To learn an instrument such as the violin or accordion (手风琴) takes years. The job opportunities for musicians are scarce and competition is fierce. Then why are more people than ever before paying a lot of good cash to get their children the best music teaching they can afford?
The secret lies in the influence of music on the whole person. It has been found that learning a musical instrument actually increases a person′s IQ over time. Different instruments and different types of music have varying effect, with classical music and the string family coming out on top, potentially increasing your IQ by up to 12 points!
When is a good time to start learning music? Experts have found that even the fetus (胎儿) can benefit from listening to classical music. Surround yourself and your family with good music from the first. The Suzuki Piano Method teaches children from the age of 3 years piano, with two lessons per week. From preschool, children can learn to read music and play from sheet music. Progress in learning your instrument is directly proportional (成比例的) to the amount of practicing.
Is there such a thing as an unmusical child? Shiniehi Suzuki proposes that music is the native home language of all human beings and therefore nobody can be "unmusical". Of course there are exceptional talents, compared to which others may seem to be slower learners.
Is there any benefit for adults in starting an instrument? Apart from the purely relaxing aspect, yes. Learning an instrument can earn even adults additional IQ points, and as an added benefit in improves your health by reducing your stress levels. Your social life may benefit too, if you are prepared to come out of your box and join occasions such as Ceilidhs (musical get together) or arrange house concerts. It has been established that people who play instruments tend to be more emotionally balanced and more patient with themselves, others and life in general.
So go ahead, sign up for that amateur orchestra, dust off your old trombone (长号) or take your first real six-string down from the attic (阁楼); get out there and play!
By writing the text, the author mainly wants to ___________.
A.persuade us to send our children to music schools
B.express his great interest in musical instruments
C.tell us the importance of music in development
D.invite us to attend Ceilidhs
[单项选择]
网桥是用来连接同介质局域网的关键网络设备，无需用户设置的网桥称为“透明网桥”。当网桥从某个端口收到正确的数据帧之后，将在其地址表中查找该帧要到达的目地站的MAC地址，若找不到，则 (47) ，若发现其也在该端口的转发表中，则 (48) 。当网络中的网桥形成环路时， (49) 。
49（）
A. 可以有效提高网络的吞吐率
B. 可以优化网络结构
C. 会对网络产生巨大影响，应避免出现
D. 会影响网络，可使用生成树协议解决
[单项选择]当初步设计达到一定深度、建筑结构比较明确时，可采用（）编制建筑工程概算。
A. 扩大单价法
B. 概算指标法
C. 实物法
D. 预算单价法
[单选题]乘客返回车站取卡币款时,车站进行核查,情况属实就填记()办理退款。
A.《卡币交接单》
B.《乘客票务事务处理单》
C.《编码室交接班登记簿》
D.情况说明
[单选题]中间清醒期是以下哪种颅脑损伤的典型临床表现( )
A.脑挫裂伤
B.脑干损伤
C.脑震荡
D.颅底骨折
E.硬脑膜外血肿
[判断题]B-A-001 3 1 3
( )工艺规程制定包括零件的工艺分析、毛坯的选择、工艺路线的拟定、工序设计或填写工艺文件等
A.正确
B.错误
[判断题]安全与生产的关系是,生产是目的,安全是前提,安全为了生产,生产必须安全。
A.正确
B.错误
[单选题]1进入施工现场严禁穿( )。
A.绝缘鞋
B.防滑鞋
C.高跟鞋
D.帆布鞋
[判断题]77. 致人精神损害的，应当为受害人消除影响，恢复名誉，赔礼道歉；造成严重后果的，应当支付相应的精神损害抚慰金。
A.正确
B.错误
[判断题]生产经营单位可以因安全生产管理人员依法履行职责而降低其工资、福利等待遇或者解除与其订立的劳动合同。
A.正确
B.错误
[单选题]DCBHQ型断相保护器输出电压（ ）。
A.DC15V~22V
B.DC20V~30V
C.DC17.5V~28V
D.DC18V~29V
[单项选择]在一级堤防上建一个小型穿堤涵洞，穿堤建筑物的级别是( )。
A. 1级
B. 2级
C. 4级
D. 5级
[单选题]正常成人24h尿量为 ( )
A.<400ml
B.<100ml
C.>2500ml
D.夜尿持续>750ml
E.1000-2000ml
[单选题]爆破拆除设计人员应具有承担爆破拆除作业范围和相应级别的爆破工程技术人员作业证。( )
A.正确
B.错误
[单选题]总承包单位和分包单位对分包工程的安全生产承担（）。
A.补充责任
B.共同责任
C.按份责任
D.连带责任
[多项选择]调度室有权根据上级指示和生产急需，调动本企业（）等。
A. 人力
B. 设备
C. 材料
D. 车辆
[判断题]
集中加配钞流程下，清分装箱与回钞清点必须采取双人操作模式。
A.正确
B.错误
[多选题]双日检检查客室照明以下几项描述正确的是：（）
A、顶板处无漏水痕迹。
B、测试客室照明功能正常。
C、检查灯罩板无破损、无变形。
D、灯罩板安装牢固，无翘起、松脱现象。
A.A
B.B
C.C
D.D
[单项选择]在高强度螺栓抗拉连接中，摩擦型与承压型承载力设计值（）。
A. 不一定相同
B. 基本相同
C. 前者高于后者
D. 后者高于前者
[单项选择]下列有关酶的表述，全面而准确的是（）
A. 酶是活细胞产生的具有催化作用的有机物
B. 酶与无机催化剂没有本质区别
C. 酶不能脱离生物体起作用
D. 酶是蛋白质
[单项选择]Dorothea Dix left home at an early age-of her own free will-to live with her grand-mother.
At fourteen, Dorothea was teaching school at Worcester, Massachusetts. A short time after she had begun teaching, she established a school for young girls in her grandparents’ home. Stress was placed on moral character at Dorothea’s school, which she conducted until she was thirty-three.
She was forced to give up teaching at her grandparents’ home, however, when she became ill. A few years of inactivity followed.
In 1841 Dorothea began to teach again, accepting a Sunday school class in the East Cambridge, Massachusetts, jail. Here, she first came upon insane people locked up together with criminals.
In those days insane people were treated even worse than criminals. There were only a few asylums(精神病院)in the entire country. Therefore jails, poorhouses, and houses of correction were used to confine the insane.
Dorothea Dix made a careful investigation of the inhuman treatme
A. an illness
B. the Civil War
C. her trip to England
D. her grandmother’s death
[多选题]各级单位应当经常进行爱护装备器材和管理、使用装备器材的教育。除结合训练、任务进行教育外，在( )等时机, 必须进行专业教育。
A.初任消防救援人员入职
B.改（换）装
C.年度装备器材普查
D.装备器材检修
[判断题]21135】500kV变压器过励磁保护本保护反映的是励磁电抗。 ( )
A.正确
B.错误
