热门试题:
[单项选择]假设V1不受最大轮胎速度和最大刹车能量速度的限制，下列代表V1的最大值的是（）
A. VREF
B. VR
C. VMCA
[多选题]使用投资组合内部收益率的方法来衡量债券投资组合收益率，需要满足的假设条件有()。
A.投资人持有该债券投资组合直至组合中期限最长的债券到期
B.投资人持有该债券投资组合直至组合中期限最短的债券到期
C.现金流能够按债券的票面利率进行再投资
D.现金流能够按计算出的内部收益率进行再投资
[判断题]企业是生产经营单位，其对人力资源的管理应着重在使用。（ ）
A.正确
B.错误
[单选题]《北京地铁手摇道岔作业时间标准》中,手摇道岔操作时间依次为:与室内综控员联系时间为秒;加钩锁器时间为秒;拆钩锁器时间为秒;确认锁闭及开通方向时间秒。( )
A.20、90、60、5
B.30、60、90、15
C.60、50、30、25
D.15、30、70、35
[单选题]口服吸收快，维持时间最短的药物是
A.地西泮
B.硝西泮
C.艾司唑仑
D.劳拉西泮
E.三唑仑
[单选题] 制冷设备在大修之后，系统内部残留下的焊渣、铁锈等杂质主要损害（ ）。
A.管线
B.真空泵
C.压缩机
D.加热炉"
[多选题]施工单位在铁路营业线施工前必须与铁路设备单位签订的协议有()。
A.施工承包协议
B.施工安全协议
C.施工质量协议
D.施工监护协议
E.施工配合协议
[单项选择]
(病例串型最佳选择题，2～3个题共用题干)
|
患者女性，27岁。首次妊娠2月并发甲亢，甲状腺较大，有轻度呼吸困难来院就诊，清晨测得T:36.4℃，BP:140/75mmHg，P:102次/min，R:20次/min |
甲亢术前药物准备的目的，哪项除外
A. 降低甲状腺功能
B. 降低基础代谢率
C. 防止气管软化，塌陷
D. 减轻甲状腺肿大
E. 减少甲状腺充血
[单项选择]
A new poll shows that people believe that computers and the Internet have made life better for Americans, but people also see some dangers in the trend toward computerization.
The poll found that the public favors some government protection from cyber-problems (网络问题), but in general people are not especially concerned about issues such as information overload or the never-ending flow of phone calls, faxes and e-mails. A separate survey of children aged 10-17 shows that they have a more positive attitude about computers than adults do, and most have made use of up-to-date technology in their schools.
The survey found that enthusiasm for computers and the Internet is found in all income groups, all regions of the country, all races, and most age groups. However, people over 60 and those towards the lower end of the income rank tend to show lower rates of computer ownership and Internet usage. The survey shows that "some kind of gap has been crossed: Computers a
A. all the American children have used the latest technology in schools
B. computers and the Internet are very popular with Americans
C. Americans tend to place more importance in the Internet usage than computers
D. the public in America do not hate the Internet problems
[单项选择]下列可鉴别心衰与气胸的是
A. 咳嗽
B. 汗出
C. 口唇青紫
D. 呼吸困难
E. 患侧呼吸音消失
[单项选择]
负有救助义务的船长，在接到（）的不需要救助的通知后，即可解除其救助义务.
Ⅰ、遇险人员Ⅱ、到达遇险人员处的另一船Ⅲ、海面搜寻协调船
A. Ⅰ
B. Ⅰ、Ⅱ
C. Ⅰ、Ⅱ、Ⅲ
D. Ⅰ、Ⅲ
[多选题]压缩冷凝单元的作用是，确保了天热车内空气的 维持在设定的范围内。
A.温度
B.相对湿度
C.洁净度
D.浑浊度
[单项选择]下列各项中不是半月板损伤急性期表现的是（）
A. 膝关节间隙明显压痛
B. 膝关节不能主动伸直
C. 膝关节有剧烈疼痛
D. 膝关节僵直，活动障碍
E. 关节肿胀，有关节内积血
[判断题]为保证零线安全,三相四线的零线必须加装熔断器。( )
A.正确
B.错误
[多选题] ( )业务集中处理流程中,柜面受理审核时,应按照制度规定对受理业务的()进行审查。
A.真实性
B.合规性
C.完整性
D.重要性
[单项选择]
corresponding letter on the Answer Sheet with a single line through the center.
Chinese are very generous when it comes to educating their children. Not caring about the money, parents often send their children to the best schools or even abroad to England, the United States or Australia. They also want their children to take extra-course activities where they will either learn a musical instrument or ballet, or other classes which will give them a head start in life. The Chinese believe that the more expensive an education is, the better it is. So parents will spend an unreasonable amount of money on education. Even poor couples will buy a computer for their son or daughter.
However, what most parents fail to see is that the best early education they can give their children is usually very cheap.
Parents can see that their children’s skills vary; skilled in some areas while poor in others. What most parents fail to realize though, is that today&rsqu
A. patience and time
B. experience
C. self-confidence
D. interest
[判断题]Ⅰ类手持式电动工具应有良好的接零或接地措施。
[判断题]带式输送机的减速器在运行中温度缓慢升高的原因是缺油.。
A.正确
B.错误
[单选题]《建筑基坑支护技术规程》（JGJ120-2012）规定，基坑支护结构安全等级分为( ) 个等级。
A.2
B.3
C.4
D.5
[判断题]1042/1137 西林电桥测试tanδ时采用正接线时适用于被试品整体与地隔离时的测量。
A.正确
B.错误
[判断题]教师能够做到严谨治学,则必然表现出实事求是的工作精神或工作态度。( )
A.正确
B.错误
[单选题]紧急救护时.发现伤员意识不清、瞳孔扩大无反应、呼吸、心跳停止时.应立即在现场就地抢救.用（）支持呼吸和循环.对脑、心重要脏器供氧。
A.心脏按压法
B.口对口呼吸法
C.口对鼻呼吸法
D.心肺复苏法
[填空题]税务机关有权检查纳税人的账簿、记账凭证、报表和有关资料,税务机关行使查账权时,下（ ）
[单选题] 原子吸收法测定微量的钙时，为克服P043-的干扰，可添加（）试剂。
A.A.NaOH
B.B.EDTA
C.C.丙三醇
D.D.硫脲
[多选题]驼峰色灯信号机及其复示信号机显示下列信号（ ）、（ ）、（ ）。
A.一个红色灯光
B.一个绿色灯光
C.一个绿色闪光灯光
D.一个黄色灯光
[填空题]
For most of the 20th century, there has been life on Mars, or,
at least in the minds of the Earthlings, who live on its closest planetary
neighbor. But could life exist on Mars, given that it is a very {{U}} (47)
{{/U}} world from what it was 3.8 billion years ago It has {{U}} (48)
{{/U}} no atmosphere. It has a barren surface, which is bathed in
ultraviolet {{U}} (49) {{/U}} from the sun, and there is no liquid water
on the surface of the planet (although there are ice caps at its poles). Mars
had moved from a warm, wet place -- a likely home for life -- to a dead world of
dust storms, {{U}} (50) {{/U}} and vast canyons. It happened because its
carbon dioxide atmosphere could not remain {{U}} (51) {{/U}} in a wet
environment. Carbon dioxide reacted with rocks, and it was rapidly absorbed by
water, where it became solid carbonates (碳酸盐) and {{U}} (52) {{/U}} to
the bottom of seas. It is a greenhouse gas, which {{U}} (53) {{/U}} heat
from
[单选题]患者,男性,32 岁,左侧胸部多根多处肋骨骨折,体格检查:极度呼吸困难,发绀,周身冷汗,BP 69/42mmHg,左胸饱满,气管向右侧偏移,叩诊呈鼓音,首要的处理方法是( )
A.剖胸探查
B.吸氧
C.胸腔穿刺排气
D.输血、输液
E.胸廓固定
[单项选择]
患者，男，60岁。上颌前牙固定修复5年，现出现松动，咬合疼痛。口腔检查：左上2缺失，左上123烤瓷固定桥修复，左上13为烤瓷全冠固位体，边缘均不密合。左上1远中和左上3的近中邻面可探及深龋，左上3叩诊（++），牙龈红肿，无牙周袋。余牙健康，咬合正常。
治疗前最需做的辅助检查是（）
A. 基牙的X线检查
B. 基牙的牙髓活力检测
C. 基牙的松动度检查
D. 基牙的干扰检查
E. 以上均需做
[判断题]( )使用双踪示波器可以直接观测两路信号间的时间差值,一般情况下,被测信号频率较低时采用交替方式。
A.正确
B.错误
[判断题]《铁运旅客运输办理细则》中规定，货币指各币种的纸币和金属辅币。
A.正确
B.错误
[单选题]辙叉偏磨是由单侧通过的列车次数较多造成的，下列( )不是预防养护的措施。
A.焊补偏磨辙叉
B.倒换方向使用
C.加强偏磨部位捣固，且兼顾辙叉水平状态
D.更换辙叉
[单项选择]个别教师不允许班上学习差的学生参加考试、随意占用学生的上课时间、指派学生参加一些与教育教学无关的商业庆典活动等。这些行为主要侵害的是学生的（）
A. 健康权
B. 名誉权
C. 受教育权
D. 隐私权
[判断题]当核电厂发生事故并进入厂房应急或以上应急状态后15分种内，核电厂应发出初始报告。
A.正确
B.错误
[单选题]下列关于致残原因描述错误的是( )。
A.遗传因素
B.意外伤害
C.理化因素
D.与心理行为因素无关
E.疾病因素
[判断题] 法律解释权属于全国人民代表大会及其常务委员会
对
错
A.正确
B.错误
[简答题]Passage1
Ifthepopulationoftheearthgoesonincreasingatitspresentrate,therewilleventuallynotbeenoughresourceslefttosustainlifeontheplanet.Bythemiddleofthe21stcentury,ifpresenttrendscontinue,wewillhaveusedupalltheoilthatdrivesourcars,forexample.Evenifscientistsdevelopnewwaysoffeedingthehumanrace,thecrowdedconditionsonearthwillmakeitnecessaryforustolookforopenspacesomewhereelse.Butnoneoftheotherplanetsinoursolarsystemarecapableofsupportinglifeatpresent.Onepossiblesolutiontotheproblem,however,hasrecentlybeensuggestedbyAmericanscientist,ProfessorCarlSagan.
Saganbelievesthatbeforetheearth’sresourcesarecompletelyexhausteditwillbepossibletochangetheatmosphereofVenusandsocreateanewworldalmostaslargeasearthitself.ThedifficultisthatVenusismuchhotterthantheearthandthereisonlyatinyamountofwaterthere.
Saganproposesthatalgaeorganismsthatcanliveinextremelyhotorcoldatmospheresandatthesametimeproduceoxygen,shouldbebredinconditionsimilartothoseonVenus.Assoonasthishasbeendone,thealgaewill
A. A．it might be possible to change its atmosphere
B．its atmosphere is the same as the earth’s
C．there is a good supply of water on Venus
D．the days on Venus are long enough
[单项选择]后遗效应是指（）
A. 在剂量过大或药物在体内蓄积过多时发生的不良反应
B. 停药后血药浓度已降至阈浓度以下时残存的药理效应
C. 突然停药后原有疾病加剧
D. 反应性质与药物原有效应无关，用药理性拮抗药解救无效
E. 一类先天遗传异常所致的反应
[判断题]到达列车从邻站报开后，技术站值班员应及时通知车号员、货物检查员、列检及有关人员。( )
A.正确
B.错误
