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[单选题]电测曲线深度有误差时,应以( )曲线为准。
A.自然电位
B.自然伽马
C.电阻率
D.声波

热门试题:

[单项选择]下列哪组实验结果将出现性状分离()
A. BB×Bb
B. Bb×Bb
C. BB×BB
D. bb×bb
[单选题]TGZ4A-4×3880/1000型变流装置的额定功率是( )。
A.1880kW
B.2880kW
C.3880kW
D.4880kW
[单项选择]群体领导班子希望自己在群体中“有令则行,有禁则止”,这一心理表现形式是()
A. 优越感
B. 威望感
C. 用权感
D. 成就感
[单项选择]荀子:锲而不舍( )
A. 老子:天长地久
B. 孔子:上善若水
C. 庄子:尽善尽美
D. 孟子:自强不息
[单选题]无论采用何种计量方式,均应将照明.动力( )计量。
A.串接
B.并接
C.分表分线
D.分时
[判断题]根据上海区域作业许可管控实施细则,作业许可审核需确定的安全风险管控措施是否能够有效管控作业安全风险,将其降至可接受水 平。(  )
A.正确
B.错误
[多项选择]糖尿病病人健康教育的好处是()
A. 有利于疾病控制达标
B. 调动患者的积极性
C. 使国家受益
D. 防止并发症的发生
E. 使患者受益
[判断题]现场工作开始前,应检查确认已做的安全措施符合要求、运行设备和检修设备之间的隔离措施正确完成。工作时,应仔细核对检修设备名称,严防走错位置。
A.正确
B.错误
[多项选择]ASAF执行委员会下设()。
A. 教育委员会
B. 公共关系委员会
C. 倡议委员会
D. 会员大会
[简答题]列控车载设备静态测试中LKJ通信接口1的试验内容有哪些?
[单项选择]施工单位不按照工程设计图纸或者施工技术标准施工的,造成工程质量较大及以上等级事故的,处所涉及单位工程合同价款()的罚款。
A. 1%以上4%以下
B. 2%以上4%以下
C. 3%以上4%以下
D. 3%以上5%以下
[判断题]可控硅导通后,即使触发电压消失,由于自身正反馈作用可控硅仍保持导通。
A.正确
B.错误
[单项选择]发现倒杆、断线,应立即派人看守,设法阻止行人通过,并与导线接地点保持()以上的距离,同时应尽快将故障点的电源切断。
A. 2m
B. 4m
C. 8m
D. 10m
[单项选择]电加温用于保护()
A. 皮托管和迎角探头
B. 皮托管和大气总温探头
C. 皮托管,静压口,大气总温探头,迎角探头
[不定项选择题]共用题干 1.Flaxseed slowed the growth of prostate tumors in men,while ginseng helped relieve the fatigue that cancer patients often feel,US researchers reported on Saturday in the first scientifically rigorous looks at alternative medicine.
2.The studies reflect doctors' efforts to explore the risks and benefits of foods and supplements that are routinely taken by their patients with little scientific proof they help.Americans spend between¥36 billion and¥47 billion a year on complementary and alternative therapies,according to the National Center for Health Statistics."Patients are taking these compounds but we need to know if they are doing any good or any harm,"said Dr. Bruce Cheson of Georgetown University Hospital in Washington who led a panel on alternative therapies at a meeting of the American Society of Clinical Oncology.
3.In the flaxseed study,researchers at Duke University Medical Center in North Carolina and colleagues evaluated the seed's role as a food supplement in 161 men who were scheduled to undergo surgery for prostate cancer."The growth rate was decreased in the men who got flaxseed,"said Dr. Nancy Davidson,an oncologist at Johns Hopkins University in Baltimore who is president-elect of ASCO."I think this is fascinating."Flaxseed is rich in omega-3 fatty acids-and lignins,a fiber found on the seed coat."We were looking at flaxseed because of its unique nutrient profile,"said Wendy Demark-Wahnefried,a researcher in Duke's School of Nursing,who led the study.
4.Half of the men in the study added 30 grams of fiaxseed daily to their diets for about 30 days.Half of the flaxseed group also went on a low-fat diet.After the surgery,the researchers looked at the men's tumor cells to see how quickly the cancer had multiplied.The cancer cells in both the flaxseed groups grew about 30 to 40 percent slower than the control group.
5.But Demark-Wahnefried is not ready to prescribe flaxseed."It's a healthy food.It has a lot of vitamins and a lot of fiber. But we cannot definitively say at this point you should take flaxseed because it is protective against prostate cancer,"she said,adding that flaxseed now needed to be studied to see if it can prevent prostate cancer.
6.In the ginseng trial,Debra Barton of the Mayo Clinic in Rochester,Minnesota,and col-leagues tested three different doses of the herb on potency with a variety of cancers who were expected to live at least six months. Twenty-five percent of patients taking a 1,000-mg dose and twenty-seven percent of patients taking a 2,000-mg dose said their fatigue symptoms were"moderately better" or"much better."Only 10 percent of those taking a 750-mg dose reported an improvement, which was about the same as the placebo group.Patients in the trial took Wisconsin ginseng from a single crop that was tested for uniform potency.It was powdered and given in a capsule form."I wouldn't have predicted this,I have to admit,"Davidson said in an interview,"we might want to test this on a large scale."
7.The flaxseed study was funded by the National institutes of Health and the ginseng study was supported by US Public Health Service grants. Paragraph 5_________
A.The Motivation of Flaxseed Study
B.The Study on Ginseng Displays Its Good Promise
C.The Doctors' Responsibility Led Them to Carry Out These Two Studies
D.Ginseng Is As Good to Cancer Patients As Flax-seed
E.The Methods and Results of the Study on Flax-seed
F.A Different Opinion on the Use of Flax-seed
[多选题]常见的洗钱方式包括( )。
A.借用金融机构
B.伪造商业票据
C.利用犯罪所得直接购置不动产和动产
D.通过证券和保险业洗钱
[判断题]精馏塔全回流操作时,回流比为0。
[单选题]HXD2型电力机车MVB总线传输速率( )Mbit/s。
A.1.5
B.2.5
C.3.5
D.4.5
[单项选择]凝结水硬度大,应立即()。
A. 停机处理
B. 隔离一台凝汽器监测
C. 切换循环水泵运行
D. 就地取样、确定泄露的凝汽器,以便隔离
[单选题]车站广播设备检查时,除了正常的广播设备功能和技术指标检查外,还要求进行()功能检查。
A.车站接收列车运行信息并自动播音
B.ATS信息正确率
C.列车到站位置
D.没要求
[判断题](    )货检站应加强超偏载检测装置检测结果的核实确认和处理。对严重超偏载货车,应立即甩车,整理后方能挂运。
A.正确
B.错误
[不定项选择题]女性,38岁,4个月来,情绪低落,兴趣索然,自觉"高兴不起来,生不如死"。自己的脑子不灵了","像是生了锈的机器";认为自己成了家庭和社会的累赘,"成了废物",有胸闷、心悸、心慌的症状,觉得是得了心脏病。主动性言语及活动明显减少,生活被动,愿独处。曾多次自杀未遂,睡眠不好,早醒。 该病人首要注意的问题是防止
A.活动少而引起的合并感染
B.拒食导致营养不良
C.自杀行为
D.冲动伤人
E.症状波动的规律
[判断题]从业人员有权拒绝违章指挥和强令冒险作业。( )
A.正确
B.错误
[判断题]设有两个及以上车场的车站,转场进路应设进路色灯信号机。( )
A.正确
B.错误
[单选题]造成1人死亡或5人以下重伤为( )类事故。
A.一般A类
B.一般B类
C.一般C类
D.一般D类
[单选题]当电源容量一定时,( )的大小反映了电源输出功率利用率的高低。
A.功率因数
B.电压
C.电流
D.电能
[判断题]碳弧气刨是利用碳弧的高温将金属熔化后,用压缩空气将熔化的金属吹掉的一种刨削金属的方法。( )
A.正确
B.错误
[单项选择]双变量正态分布的相关回归分析中,r和b的关系错误的是()。
A. r值和b值的大小可由公式推导得出
B. 二者没有数量关系
C. 二者符号相同
D. r和b的假设检验等价
E. 二者的取值范围不同
[单选题]下面各组词语的字形及加点字的注音全对的一项是 ( )。
A.揣摩(chuǎi) 蓦然(mù) 轩然大波(xuān) 大气磅礴(bò)
B.魁梧(wú) 污秽(huì) 荒谬绝伦(miù) 提纲挈领(qiè)
C.濒临(bīng) 栈桥(zhàn) 拈轻怕重(niān) 蜂涌而至(yǒng)
D.惬意(qiè) 亢奋(kàng) 同仇敌忾(qì) 繁华嫩叶(nèn)
[单选题](37088)要使作用在同一物体上的二力维持平衡,其必要与充分条件是此二力( )。(1.0分)
A.大小相等
B.方向相反
C.且作用有同一直线上
D.以上都必须满足
[判断题]JW-4G型接触网作业车制动器油缸回路上设有单向节流阀,作用是使制动缸缓慢松开和快速制动,保证作业安全。
A.正确
B.错误
[多选题]移动式升降作业车安全须知有()
A.非电气专业人员不得随意拆装电器,以防触电或误接。
B.需要进入升降台工作平台下面检修时,必须吊住升降台工作平台,以防升降台突然下降,造成人员伤亡。
C.用户不得任意调整溢流阀。若任意调整溢流阀后,可能会造成液压系统非正常运行,可能会使升降台升不起来,也可能会使油管爆破对人、机都会有不必要的损伤(若需要调整溢流阀请与厂家联系,否则后果自负)。
D.拆卸液压系统任何部位之前,不需要卸压。
[判断题]【判断】 机动车在行驶中,喇叭不响,应减 速行驶。( )
A.正确
B.错误
[单项选择]鲁某,女,41岁。症见午后、夜间发热,次晨稍降,胁下可触及肿块,疼痛不移,面色黯黑,肌肤甲错,舌有瘀斑,脉细涩。其首选方剂是()
A. 桃红四物汤
B. 少腹逐瘀汤
C. 血府逐瘀汤
D. 膈下逐瘀汤
E. 桃核承气汤
[单选题]机车车辆必须停在警冲标内方。调车作业中,车辆临时停在警冲标外方时,一批作业完了后,应立即送入警冲标内方。因特殊情况需在警冲标外方进行装卸作业时,须经( )、调车区长准许,在不影响列车到发及调车作业的情况下方可进行,装卸完了后,应立即送入警冲标内方。《技规》第305条
A.车站值班员
B.车站调度员
C.助理值班员
D.调车长
[判断题]直到西周时期,中国画的基本样式才确立起来。
[判断题]对冻害应采取疏通排水、保温、换填路基、注防冻剂等方法有计划地进行整治。
A.正确
B.错误

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