热门试题:
[判断题]《铁路技术管理规程( )》:2.列车发生火灾;
A.正确
B.错误
[单项选择]对转化催化剂还原而言,还原的起始时间是,()计算较为合理
A. 从配入氢气开始
B. 达到一定的氢浓度
C. 达到一定的还原温度
D. 达到一定的氢浓度和一定的温度
[判断题]电力系统安全自动装置,是指在电力网中发生故障或异常运行时,起控制作用的自动装置。
A.正确
B.错误
[单选题]7.患者,男,65岁。慢性胃溃疡,近日主诉胃部疼痛并伴大便颜色发黑,疑为“十二指肠溃疡并发出血”入院。医生开出下列医嘱,需即刻抄到执行单上的是
A.5%葡萄糖500ml+西咪替丁04g静脉滴注st
B.血常规
C.大便隐血试验
D.奥美拉唑(洛赛克)20mg口服bid
E.胃镜检查
[多选题]下列符合木岔枕失效标准的是:( )。
A.腐朽失去承压能力,钉孔腐朽无处改孔,不能持钉
B.折断或拼接的接合部分离,不能保持轨距
C.机械磨损,经削平或除去腐朽木质后,允许速度大于120 km/h的线路,其厚度不足140 mm,其他线路不足100mm
D.劈裂或其他伤损,不能承压、持钉
[单选题]超声波探伤中最常用的换能器是利用()。
A.磁致伸缩原理
B.压电原理
C.波型转换原理
D.涡流原理
[判断题]烷烃在近紫外光区不产生吸收峰,因此常用作紫外吸收光谱分析的溶剂。
A.正确
B.错误
[多选题]受电变压器容量在100KVA及以上的()客户执行功率调整因数调整电费。
A. 高压供电
B.低压供电
C.趸售用电
D. 农业生产
[多选题]新型白酒的感观质量鉴别主要在以下几方面:()等。
A.酒体净否
B.香精优劣
C.香味谐调
D.甜味适宜
[简答题]【问题2】
若采用电视铜缆接入计算机主干网络,用户端需增添什么设备网络通信速率为多少
[单项选择]在计算机中负责指挥和控制计算机各部分自动地、协调一致地进行工作的部件是( )。
A. 控制器
B. 运算器
C. 存储器
D. 总线
[简答题]汉武帝时期,“经”主要指的是哪一家的典籍?
[单选题]若一张工作票下设多个小组工作,工作负责人应指定每个小组的小组负责人(监护人),并使用( )。
A.工作任务单
B.安全措施票
C.派工单
D.工作任务卡
[判断题]全自动投运技术要求配电终端处于“就地”工作状态,遥控压板投入,可进行正常遥控
A.正确
B.错误
[填空题]孕晚期的膳食要增加______、______、______的摄入量,有水肿的孕妇要控制______的摄入量。
[单选题]在有人看守的桥隧建(构)筑物及可能危及行车安全的坍方落石地点,根据需要设遮断信号机。该信号机距防护地点不得小于() m。
A.50
B.80
C.100
D.120
[多选题]带电更换10千伏直线杆,布置工作现场,在绝缘斗臂车和工具摆放位置四周()和()
A.安全防护栏
B.安全遮拦
C.安全护栏
D.警告标示
E.作业标志
[单项选择]患儿,出生13天。啼声细弱无力,皮肤干皱,肌肉瘠薄,四肢不温,吮乳乏力,时时呛乳溢乳,哽气腹胀明显,指纹淡。治疗可在所选主方基础上加用()
A. 泽泻、白术
B. 三棱、莪术
C. 川芎、枳实
D. 木香、枳壳
E. 陈皮、滑石
[单项选择]AIS 信号的等效二进制内容是()
A. 连"0"
B. 连"1"
C. "0"和"1"间隔排列
D. "0"、"1"和"-1"间隔排列
[单项选择]我国《收养法》规定:监护人送养未成年孤儿的,须征得有抚养义务人的同意,这里所指的有抚养义务的人是指( )。
A. 有负担能力的叔、伯、姑、舅、姨
B. 有负担能力的祖父母、外祖父母和兄姐
C. 孤儿住所在地的居民委员会
D. 孤儿父母所在的单位
[多选题]《动车组烟感报警应急处置措施》如发现因厕所内旅客吸烟导致的烟感报警,在未发生火险和不危及列车防火安全的情况下,经随车机械师确认设备状态良好,由随车机械师立即将情况向司机报告。同时,列车乘务人员要立即检查厕所内是否有( ),垃圾箱、手纸盒内是否有( )等,并做好取证工作。
A.烟头
B.烟灰
C.火种
D.火星
[判断题]《安规》规定各种锤、铲、挫、冲、斧等手动工具的材质硬度要坚硬无比,表面须平整,无卷边,缺损、裂纹。( )
A.正确
B.错误
[判断题]36.有高低压衔接部位的流程,操作时必须先倒通局压部分,后导通低压部分。
A.正确
B.错误
[单项选择]一群在海滩边嬉戏的孩子的口袋中,共装有25块卵石。他们的老师对此说了以下两句话:第一句话:“至多有5个孩子口袋里装有卵石”;第二句话:“每个孩子的口袋中,或者没有卵石,或者至少有5块卵石”。
以下哪项关于老师两句话关系的断定一定成立
Ⅰ.如果第一句话为真,则第二句话为真。
Ⅱ.如果第二句话为真,则第一句话为真。
Ⅲ.两句话可以都是真的,但不会都是假的。
A. 仅Ⅰ。
B. 仅Ⅱ。
C. 仅Ⅲ。
D. 仅Ⅰ和Ⅱ。
E. 仅Ⅱ和Ⅲ。
[判断题]日光灯就是利用自感电势来点燃灯管的。
A.正确
B.错误
[单选题]起重作业时,起重机臂架、吊具、辅具、钢丝绳及吊物等与110kV架空输电线路及其他带电体的距离不得小于(),且应设专人监护。
A.2.0m
B.4.0m
C.5.0m
D.6.0m
[单项选择]某股份有限公司经批准向社会公开募集股份但超过招股说明书规定的截止日期只募足了其发行的股份的90%,此时下列说法正确的是:
A. 可以由认股人召开创立大会决议成立公司
B. 可以由发起人召开创立大会决议成立公司
C. 可以向审批机关申请延长30天募股期
D. 认股人可以要求发起人返还所缴股款并加算银行同期利息
[单选题]《国家电网公司输变电工程施工现场关键点作业安全管控措施》作为强制性措施,划出关键作业施工安全管理的底线、红线,施工过程中必须严格执行,违反本措施由()下发停工令,并告知业主。
A.监理
B.施工
C.设计
D.安监部门
[单选题]低压加热器发现泄漏后,如果是胀接的管子,胀口漏了可以重胀;但如果胀口裂了,则应换管。
A.正确
B.错误
[判断题]在列车全部通过道口前,道口信号应始终保持禁止通行状态,自动栏杆(门)应始终保持关闭状态。()
A.正确
B.错误
[单选题]企业持有现金的成本不包括( )等部分。
A.交易成本
B.短缺成本
C.管理成本
D.机会成本
[判断题]个人可以设立动物病原微生物实验室或者从事动物病原 微生物实验活动。 ( )
A.正确
B.错误
[不定项选择题]共用题干
More about Alzheimer's Disease
Scientists have developed skin tests that may be used in the future to identify people with Alzheimer's disease and may ultimately allow physicians to predict who is at risk of get-ting this neurological disorder.
The only current means of diagnosing the disease in a living patient is a long and expen-sive series of tests that eliminate every other cause of dementia.
“Since Aloes Alzheimer described the disease nearly a century ago,people have been trying to find a way to accurately diagnose it in its early stages,“said Patricia Grady,acting director of the National Institute of Neurological Disorders and Stroke in Bethesda,Mary-land."This discovery,if confirmed,could prove a big step forward in our efforts to deal with and understand the disease.”
Alzheimer's is the single greatest cause of mental deterioration in older people,affecting between 2.5 million and 4 million people in the United States alone. The devastating disorder gradually destroys memory and the ability to function,and eventually causes death. There is currently no known treatment for the disease.
Researches discovered that the skin cells of Alzheimer's patients have defects that inter-fere with their ability to regulate the flow of potassium in and out of the cells.The fact that the cell defects are present in the skin suggests that Alzheimer's results from physiological changes throughout the body,and that dementia may be the first noticeable effect of these changes as the defects affect the cells in the brain,scientists said.
The flow of potassium is especially critical in cells responsible for memory formation. The scientists also found two other defects that affect the cells'supply of calcium,another critical element.
One test developed by researches calls for growing skin cells in a laboratory culture and then testing them with an electrical detector to determine if the microscopic tunnels that govemn the flow of potassium are open. Open potassium channels create a unique electrical signature.
A spokesman for the Alzheimer's Association said that if the validity of the diagnostic
test can be proven it would be an important development,but cautioned that other promising
tests for Alzheimer's have been disappointing.
The last paragraph implies that the diagnostic test______.
A.will not be as promising as others
B.is a very important development
C.may not be proven valid smoothly
D.will surely be disappointing in the end
[单项选择]改善通气和给氧、除颤或起搏、药物治疗属于
A. 告急
B. 快速判断心脏骤停
C. 基础心肺复苏(基本生命支持)
D. 高经复苏(进一步生命支持)
E. 心搏恢复后的处理
[单选题]某二级耐火等级且设置自动喷水灭火系统的多层商店营业厅每层建筑面积为1600m在进内部装修的时候,地面装修材料的燃烧性能不应低于()。
A.B3级
B.B2级
C.A级
D.B1级
[单项选择]《春到沂河》是王蕙然创作的()独奏曲。
A. 扬琴
B. 柳琴
C. 古琴
D. 三弦
[单项选择]患儿,2岁,因不长牙就诊。检查:上前牙区2个锥形小牙,余牙未见,无牙部位无牙槽嵴,颌骨发育正常。该症状是哪个疾病的表现之一
A. 锁骨-颅骨发育不良
B. 外胚叶发育不良综合征
C. 创伤
D. 掌跖角化综合征
E. 眼-牙-指综合征
[单项选择]
Is Your Child’s Stomach Pain All in His Head
We all know there are times that kids seem to complain (51) a stomachache to get out of chores(零星活儿)or going to school. Don’t be so sure that the pain they (52) is all in their minds. We’re learning more now about a condition (53) " functional abdominal pain" that is experienced by millions of kids every day.
Like many teenagers, Kyle Brust makes it a point to do his homework as (54) as he gets home. Unlike most, Kyle often did this with a terrible stomachache. In fact, the (55) often started while he was at school, but getting help there was getting harder.
"Some of my teachers wouldn’t let me go, because I’d asked so many times before and they thought I was trying to get out of (56) ," says Kyle.
Kyle’s mom Marilyn says she couldn’t blame the (57) . After all, she’d tak
A. stomach
B. head
C. heart
D. mind