热门试题:
[单项选择]Our bodies are wonderfully skilful at maintaining balance. When the temperature jumps, we sweat to cool down. When our blood pressure falls, our hearts pound to compensate. As it turned out, though, our natural state is not a steady one. Researchers are finding that everything from blood pressure to brain function varies rhythmically with the cycles of sun, moon and seasons. And their insights are yielding new strategies for keeping away such common killers as heart disease and cancer. Only one doctor in 20 has a good knowledge of the growing field of "chronotherapeutics," the strategic use of time (chronoa) in medicine. But according to a new American Medical Association poll, three out of four are eager to change that. "The field is exploding", says Michael Smolensky. "Doctors used to look at us like, ’What space ship did you guys get off of ’ Now they’re thirsty to know more."
In medical school, most doctors learn that people with chronic conditions should take their medicine
A. Doctors know less about chronotherapeutics than before.
B. Doctors in the U. S. used to be thirsty to know more about the new medical field.
C. The researchers insights are providing new strategies to cure common killers.
D. The strategic use of time in medicine attracts more attention in the medical circle in the U.S.
[判断题]曳引电机线圈绕组，应经常用汽油擦拭。
A.正确
B.错误
[判断题] 工作负责人应组织执行工作票所列安全措施。
A.正确
B.错误
[单选题]5GC网络切片基于（）实现
A.NSSF;
B.SBA;
C.AMF;
D.NSSAI
E.略
F.略
G.略
[多选题]临床科室开医嘱、处方或进行治疗时，应查对( )
A.患者姓名
B.性别
C.床号
D.住院号
E. ID号
[判断题]铸铁平垫铁的厚度最小为20mm,普通碳素钢平垫铁的最小厚度为10mm。
A.正确
B.错误
[单选题]张某无精神疾病，其酒后经常到某公安派出所，见到民警就进行拦截、辱骂，有时在白天有时在夜间。民警劝其回家，他就拨打110进行投诉。张某的行为构成( )。
A.侮辱
B.寻衅滋事
C.扰乱单位秩序
D.谎报警情
[单选题]接触粉尘以煤尘为主的在岗人员，职业健康检査（ ）1次。
A.每年
B.每2年
C.每3年
[单选题]互感器的二次绕组必须一端接地，其目的是（B）。
A.防雷
B.保护人身和设备安全
C.连接牢固
D.防盗
[单选题] 的距离 和方位角 为( )时,则 两点的坐标增量为 , 。
A.179.150m、163°34′27″
B.264.854m、106°25′33″
C.179.150m、253°34′27″
D.264.854m、286°25′33″
[多选题]在保安巡逻勤务中，常采用的区域巡逻方式有（）。
A.骑巡
B.步巡
C.车巡
D.机巡
[单选题]在光纤回路工作时，应采取相应防护措施防止激光对（）造成伤害。
A.皮肤
B.人眼
C.手部
D.脸部
[单选题]蒲黄的功效是
A.止血，化瘀，利尿
B.止血，温胃，行气
C.止血，敛肺，下气
D.止血，敛肺，止咳
E.止泻，活血，定痛
[单项选择]反复使用产生显著镇静作用的镇痛药是
A. 哌替啶
B. 芬太尼
C. 美沙酮
D. 喷他佐辛
E. 可待因
[单选题]桥梁上，上弯度曲线平顺，跨中上弯度值与计算值差不超过（）为优良。
A.±2mm
B.±3mm
C.±4mm
D.±5mm
[单选题]铁路（ ）产品须按有关规定，执行行政许可、产品认证等铁路产品准入制度。
A.重要
B.普通
C.一般
D.所有
[单选题]公共场所设置的消防应急照明，连续供电时间不得少于()。
A.10分钟
B.15分钟
C.20分钟
[单项选择]翡翠上有柳，那它的价值应该（）。
A. 高于普通的
B. 两、三个抵一个普通的
C. 有收藏意义
D. 可以原价购买
[单项选择]河北省某公司向北京仲裁委员会申请仲裁其与北京某企业间的买卖合同纠纷，仲裁委员会受理了申请。北京市某企业为逃避责任，遂出示了一份伪造的证人证言，仲裁庭根据这份证人证言，裁决申请人河北某公司赔偿申请人损失50万元。河北省某公司不服该裁决，并且在收到仲裁裁决后发现了这一情况。若您是河北某公司的代理人，您如何通过法律维护被代理人的权益
A. 向仲裁委员会所在地的中级人民法院申请撤销裁决
B. 待对方当事人申请执行裁决时，向有关人民法院申请不予执行
C. 起诉对方当事人
D. 向仲裁委员会所在地的基层人民法院申请撤销裁决
[单选题] 不能用来扑救带电设备火灾的灭火器是( )。
A.1211灭火器
B.干粉灭火器
C.泡沫灭火器
D.二氧化碳灭火器
[单选题]听觉信号重复明示时,须间隔( )以上。
A.1s
B.2s
C.3s
D.5s
[单选题]钢丝绳应定期（ ）。
A.A.刷漆
B.B.浸油
C.C.清洗
D.D.浸水
[单选题]两线路中心距离( )m以下的曲线地段，内侧曲线的超高不得小于外侧曲线超高的一半，否则，必须根据计算加宽两线的中心距离。
A.A、8
B.B、6
C.C、5
D.D、10
[判断题]跨越架的中心应在线路中心线上,宽度应超出新建线路两边线各1.0m,且架顶两侧应设外伸羊角。
A.正确
B.错误
[单选题]《煤矿安全规程》规定，巷道贯通时，停掘工作面必须（）。
A.A停止通风
B.B正常通风
C.C增加风量通风
D.D减少风量通风
[单项选择]房地产能抵消通货膨胀的影响，尤其是( )的影响。
A. 预期通货膨胀
B. 非预期通货膨胀
C. 成本型通货膨胀
D. 需求型通货膨胀
[单选题]
甲企业系增值税一般纳税人，销售商品适用增值税率为13%。2021年1月1日与乙公司签订协议销售商品一批，增值税专用发票上注明价格为100万元，增值税税额为13万元。商品已发出，款项已收到。该协议规定，该批商品销售价格（不含增值税税额）的30%属于商品售出后5年内提供修理服务的服务费。则甲公司2021年1月1日应确认的合同负债为（ ）万元。
A.3.9
B.70
C.30
D.33.9
[判断题]驼峰信号机变换显示时，应由原来的显示直接转换为新的显示，其间不应闪现其它显示。
A.正确
B.错误
[单项选择]Tom was fourteen years old. He studied in a middle school. Tom was going home at five yesterday. He got on a bus. A mother with her little boy was sitting nearby. Suddenly the boy cried. His mother tried her best to make the boy stop crying but the boy would not do so. At last Tom said angrily,“Oh, how terribly that boy cried! Why don’t you give him what he wants ”“I would if I could.”answered the mother quietly,“But he wants your cap.”
The boy is five years old.
A. Right.
B. Wrong.
C. Doesn’t say.
[单选题]下列元件不属于液压泵组的是( )。
A.电动机
B.液压缸
C.液压泵
D.液压管路
[单项选择]执行下面的程序段后，AL 中的内容是( )。
BUF DW 2152H，3416H，5731H，4684H
MOV BX，OFFSET BUF
MOV AL，3
XLAT
A. 46H
B. 57H
C. 16H
D. 34H
[单项选择]质量问题发生后，事故发生单位应在（）书面上报建设单位。
A. 2天内
B. 3天内
C. 12小时内
D. 2小时内
[单项选择]( )质量控制的重点是生产组织机构的职责分工，人员培训和授权，生产运作程序的编制并在试车调试过程中进行验证，接收移交准则的执行和完整准确的接收记录。
A. 工程设计
B. 试车调试
C. 生产准备
D. 建筑安装过程
[判断题]轨道作业车每行驶半年，应按规范对车轴进行探伤，合格的填发轨道车车轴探伤合格证；对车钩进行解体探伤并对车钩缓冲装置进行检查，合格的填发轨道车车钩探伤合格证。
A.正确
B.错误
[单项选择]The African (1) of today’s black Americans were brought to the U.S. as slaves in the seventeen, eighteenth, and nineteenth centuries. They worked on farms, (2) on large farms in the southern states. (3) they became a part of the economic system of the South.
Slaves did not have the rights of people; (4) the law, they were "thing" which belonged to the person who bought them. They had to (5) the orders of their owners (6) . They were not allowed (7) to read; their owners feared that (8) slaves would begin to think about the (9) of the system and would learn to (10) their freedom. Slaves had to work long hours in (11) conditions Their owners had (12) power over them. They could be bought and sold like animals. At the slave markets, black children were separated form their parents and never saw them again. Slaves owners had the right to punish severely
A. extreme
B. lucky
C. few
D. kindly
[单项选择]功能性抽搐多见于（）
A. 3岁以内儿童
B. 3-5岁儿童
C. 6-12岁儿童
D. 老年人
E. 成人
