热门试题:
[单选题]特殊情况下，经负责事故调查的人民政府批准，提交事故调査报告的期限可以适当延长，但延长的期限最长不超过（ )。
A. 20日内
B. 30日内
C. 60日内
D. 90日内
[判断题]倾动炉圆盘浇铸机喷淋冷却水的设计压力为10 bar。
[不定项选择题]共用题干
第二篇
Cell Phones : Hang Up or Keep Talking?
Millions of people are using cell phones today.In many places it is actually considered unusual not to
use one.In many countries,cell phones are very popular with young people.They find that the phones are
more than a means of communication一having a mobile phone shows that they are cool and connected.
The explosions around the world in mobile phone use make some health professionals worried.Some
doctors are concerned that in the future many people may suffer health problems from the use of mobile
phones.In England,there has been a serious debate about this issue. Mobile phone companies are worried about
the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health.
On the other hand,why do some medical studies show changes in the brain cells of some people who use
mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning
equipment. In one case,a traveling salesman had to retire at a young age because of serious memory loss.He
couldn't remember even simple tasks.He would often forget the name of his own son.This man used to talk
on his mobile phone for about six hours a day,every day of his working week,for a couple of years. His family
doctor blamed his mobile phone use,but his employer's doctor didn't agree.
What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines
can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is
some radiation,but they say the amount is too small to worry about.
As the discussion about their safety continues,it appears that it's best to use mobile phones less often.
Use your regular phone if you want to talk for a long time.Use your mobile phone only when you really need
it. Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones
may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile
phone too often.
The salesman retired young because_________.
A.he disliked using mobile phones
B.he was tired of talking on his mobile phone
C.his employer's doctor persuaded him to
D.he couldn't remember simple tasks
[单选题]每条简单的线都能蕴含着一种"意思"，这种"意思"的产生来自于对大自然（ ）和体验。
A.喜爱
B.了解
C.体会
D.观察
[多选题]下列对起重机操作人员描述正确的是（ ）。
A.A.起重机械操作人员应持证上岗
B.B.非操作人员禁止进入操作室
C.C.操作人员应按规定的起重性能作业，禁止超载
D.D.当信号不清或错误时，操作人员可拒绝执行
[判断题]1941年12月7日的珍珠港事件标志中国抗日战争从此进入了相持阶段。( )
A.正确
B.错误
[单项选择]中国第一位登陆美国NBA的篮球运动员是（）。
A. 王治郅
B. 刘玉栋
C. 姚明
D. 巴特尔
[多选题]以下属于票务钥匙的是？
A.票务室门钥匙
B.客服中心门钥匙
C.小推车钥匙
D.站台门钥匙
[单项选择]对鼓室肌生理功能的描述，不正确的是（）。
A. 肌反射对声刺激的保护作用，高频较低频为优
B. 耳内肌反射有潜伏期，强刺激时较弱刺激时短
C. 耳内肌收缩时鼓膜紧张度增加，各听骨之间连接更紧，听骨链劲度增大，使中耳的传声效能减弱
D. 声音引起耳内肌的反射中，镫骨肌收缩起主要作用
E. 但因这种肌反射有一定潜伏期，对于突发性爆炸声的保护作用不大
[单项选择]以下不属于VLAN划分方法的是（）。
A. 基于端口划分VLAN
B. 基于MAC地址划分VLAN
C. 基于用户划分VLAN
D. 基于网络协议划分VLAN
[单选题]在完成SDS测验时,要求被试者评定自己的实际感觉,其时间范围是最近( )。
A.一年
B.一月
C.一周
D..二周
[判断题] 办理变更等级需要补收票价差额时,可发售一张补价票,随同原票使用有效。
A.正确
B.错误
[单选题]（类别：号段管理难度：中等）智慧城市是哪个部委牵头并出具建设规范？（）
A.发改委
B.工信部
C.国务院
D.人大
[单项选择]Some young people drink drinks such as Red Bull and Rockstar to boost their energy, concentration and athletic performance.
(67) the caffeinated energy drinks don’t appear to provide the claimed benefits and can cause (68) , including serious medical complications (并发症), says a review of the scientific literature published online in Pediatrics.
The paper is already drawing (69) from
the beverage(饮料) industry, (70) says energy drinks have no more caffeine than a cup of coffee and aren’t (71) used by kids and teens.
Surveys show that 30% to 50% of teens and young adults (72) energy drinks, but "we didn’t see (73) that drinks have (74) effects in improving energy, weight loss, athletic performance and concentration," says Lipshultz, a pediatric cardiologist (儿科心脏病专家). He (75) pediatricians and parents to talk to kids and teens about (76) they should be drinking such beverages.
[判断题]阶级道德或社会道德，在很大范围上都是通过具体的职业道德形式表现出来的。()
A.正确
B.错误
[单选题]铝及铝合金焊前必须仔细清理焊件表面的原因是为了防止（ ）。
A.A.热裂纹
B.B.冷裂纹
C.C.气孔
D.D.烧穿
[判断题]存货的仓储费用是存货成本的一个组成部分。( )
[单选题]地面正常情况下，哪个部件控制前轮转弯系统？
A.驾驶盘
B.反推手柄
C.驾驶杆
D.前轮转弯手柄和脚蹬
[单项选择]某些灵长类动物和3岁前的儿童主要具有的思维类型是（）。
A. 形象思维
B. 直观动作思维
C. 抽象思维
D. 分析思维
[单选题]单程票的作用？
A.A.仅可一次进站使用
B.B.只可进行一次进站和一次出站使用
C.C.只可进行一次出站使用
D.D.一次往返使用
[单选题]SDZ-5000测井系统 UPS 电源机箱由一个 ( )的在线式 UPS 组成。
A.1KW
B.4KW
C.2KW
D.3KW
[多项选择]公共资源的特征有（）。
A. 稀缺性
B. 使用不受限制
C. 充足性
D. 使用受到限制
[单选题]发生燃烧必须同时具备（ ）、助燃物质和着火源三个条件。
A.A.可燃物质
B.B.空气
C.C.水分
D.D.氧气
[单选题]《国家电网有限公司输变电工程施工安全风险识别、评估及预控措施管理办法》为公司基建（）级规章制度。
A.四
B.三
C.二
D.一
[单项选择]做家常饼一般用（）。
A. 冷水面
B. 温水面
C. 热水面
D. 沸水面
[填空题]The human brain can do a lot of wonderful things; many of them include 1 mastery of complex feedback systems with long 2 For example, consider how difficult raising a child truly is. Many factors are 3 , including the nutritional, physical, emotional and mental condition of the child, and the feedback of these factors 4 the behavior of those involved in raising the child. To 5 matters, many of the responses of the child/parent "system" take years to 6 themselves. Yet billions of parents have somehow 7 to feed, clothe, protect, nurture, heal, teach, and love their children 8 successful adulthood.
9 all our intuitive sophistication in dealing with complicated situations, it’’s a 10 to see how poorly we deal with some newer systems, most of 11 brought about by technology.
Both raising children and protecting Earth’’s life-support systems are 12 of life and death; in the long term, they are equally important. But 13 our brains seem fairly well prepared for
A. A．that
B．which
C．them
D． those
[判断题]31006】RLC串联电路,当ωC<1/ωL时电路成容性。 ( )
A.正确
B.错误
[判断题]变压器的空载状态是指：一次绕组加上交流电源电压U1，二次绕组开路（不接负载）。因此，一次绕组中没有电流通过。( )
A.正确
B.错误
[判断题]市人民医院自建800千伏安专变用电,执行功率因数标准应为0.85。( )
A.正确
B.错误
[单选题] SDH网中不采用APS协议的自愈环有( )。
A.二纤单向通道倒换环;
B.二纤单向复用段倒换环;
C.四纤双向复用段倒换环;
D.二纤双向复用段倒换环
[判断题]( )正确处理养老机构人际关系,应明确养老护理员与服务对象之间是 契约和法律关系。
A.正确
B.错误
[单项选择]水文地质简单型矿井边界防隔水煤（岩）柱总宽度不得小于（）m。
A. 20
B. 30
C. 40
D. 50
[单选题] 使用灭火器扑救火灾时要对准火焰( )喷射。
A. 上部
B. 中部
C. 根部
D. 内部
[多选题]国家规定的安全色叙述中，正确的是（）。
A.绿色表示提示、安全状态通行
B.红色表示禁止、停止
C.蓝色表示指令，必须遵守的规定
D.黄色表示警告、注意
[单选题]关于场监雷达的描述，正确的是（）
A.只能发现有应答机的目标
B.能发现所有目标
C.只能发现有S模式应答机的目标
D.不能确定
[单项选择]急性呼吸性酸中毒时不会发生的生理改变为（ ）
A. 呼吸加快加强
B. 可出现“颅内窃血”
C. 血儿茶酚胺及皮质类固醇增加
D. 心率加快，心输出量增加，肺动脉压增加
E. 肾脏增加HCO重吸收。缓解pH的下降幅度
[判断题]氯碱生产氯氢工段泡沫吸收塔中,氯气的空塔气速越大,吸收效果越好。( )
A.正确
B.错误
[填空题]公司（ ）,二级单位（ ）举办一次技术交流会或观摩会,进行公司范围内的技术创新总结与交流。
[单项选择]
下列有关美苏争霸的事件发生的先后顺序是（）
①古巴导弹危机②苏联占领阿富汗
③美国提出“星球大战计划”④苏联退出东欧地区
A. ①②③④
B. ②③①④
C. ①④③②
D. ②④①③
