热门试题:
[多选题] 依据《DL 5009.2-2013 电力建设安全工作规程 第2部分变电站》第6.1.5条规定:在带电设备周围不得使用( )进行测量工作,应使用相关绝缘量具或仪器进行测量。
A.钢卷尺
B.皮卷尺
C.线尺(夹有金属丝者)
D.仪器
[单选题]以下关于色散补偿错误的是( )。
A.TWF单板在G.652光纤上无色散补偿传输距离为30Km,超过30Km必需加色散补偿模块
B.G.653光纤可以用在32×2.5G波分系统
C.色散补偿的要求是补偿后,系统中任何使用波长的剩余色散量不应超过光源的色散容限
D.色散系数的定义是波长相距1nm的两个光信号传输1km距离的时延差,单位是ps/nm.km
[多选题]为了确保加油站油品质量不易变质,通常可采用( )等方法
A.密闭储存
B.减少油品中转环节
C.冷冻储存
D.高温储存
[单项选择]接地体为圆钢,若采用搭接焊接,应双面施焊,其搭接长度为圆钢直径的()倍。()
A. 4
B. 6
C. 8
D. 2
[判断题]三相短路时,母线上正序电压下降得最厉害,两相短路次之,两相接地短路又次之,单相短路时正序电压下降最少.; 收藏该题
A.正确
B.错误
[判断题]必要时,专职安全员可以要求其他列车工作人员予以协助。
A.正确
B.错误
[单选题]树枝接触或接近高压带电导线时,应将高压线路停电或用( )使树枝远离带电导线至安全距离。此前禁止人体接触树木。
A.绳索
B.干燥的毛竹
C.绝缘工具
D.工具
[单项选择]气虚发热证的首选方为()
A. 金匮肾气丸
B. 补中益气汤
C. 清骨散
D. 血府逐瘀汤
E. 归脾汤
[单选题]
鲍伯每次打开WORD程序编辑文档时,计算机都会把文档传送到一台FTP服务器上,鲍伯怀疑最大可能性是WORD程序已被黑客植入( )。
A.病毒
B.特洛伊木马
C.FTP匿名服务
D.陷门
[判断题]在电缆隧(沟)道内巡视时,工作人员应携带便携式气体测试仪,通风不良时还应携带正压式空气呼吸器。
A.正确
B.错误
[多选题]装备报废应当达到什么使用要求?
A.已不具备训练、教学、展示价值的退役装备
B.存在安全隐患,可能造成人员伤亡、经济损失、环境污染的退役装备
C.因其他原因应当报废的
[多选题]建立变电站全景数据,满足基础数据的()的要求
A.一致性
B.完整性
C.准确性
D.唯一性
[单项选择]肺炎球菌肺炎痰呈铁锈色与哪一病理分期有关()
A. 水肿期
B. 消散期
C. 灰色肝变期
D. 充血期
E. 红色肝变期
[单选题]录井仪器房应放置于井场右前方靠振动筛一侧,距井口( )安全位置处。[1分]
A.25m~30m
B.25m~35m
C.30m~40m
D.30m~35m
[单项选择]甲村与乙村交界处20公顷土地的权属由于历史原因一直处于不明确状态,双方多次协商未果,进而演化为械斗。乡政府为了早日解决问题,在双方代表参与的情况下,经过审查裁决土地所有权属于甲村。乡政府的行为属于:( )
A. 行政处罚
B. 行政裁决
C. 行政调解
D. 行政确认
[简答题]所属知识 : -> 电工技师理论知识 -> 专业知识 -> 判断处理电器故障 -> 交流接触器衔铁的常见故障
短路环断裂多发生在槽外的转角和槽口部分,维修时可将断裂处焊牢或进行更换,并用环氧树脂加固。
[不定项选择题]共用题干
What Is Insulin-dependent Diabetes?
When you eat,your body takes the sugar from food and turns it into fuel.______(46)Your body uses glucose for energy,so it can do everything from breathing air to playing a video game.But glucose can't be used by the body on its own-it needs a hormone called insulin to bring it into the cells of the body.
Most people get the insulin they need from the pancreas,a large organ near the stomach?The pancreas makes insulin;insulin brings glucose into the cells;and the body gets the energy it needs.When a person has insulin一dependent diabetes,it's because the pancreas is not making insulin.So someone could be eating lots of food and getting all the glucose he needs,but without insulin,there is no way for the body to use the glucose for energy.______(47)
You may have heard older people talk about having diabetes,maybe people of your grandparents'age.Usually,this is a different kind of diabetes called non一insulin一dependent diabetes.It can also be called Type 2 diabetes,or adult-onset diabetes.______(48)
When a kid is diagnosed with juvenile(insulin-dependent)diabetes,he will have that type of diabetes for his whole life.It won't ever change to non-insulin-dependent diabetes when he gets older.
Scientists now think that a person who has juvenile diabetes was born with a certain gene or genes that made the person more likely to get the illness.______(49)
Many scientists believe that along with having certain genes,something else outside the person's body, like a viral infection,is necessary to set the diabetes in motion by affecting the cells in the pancreas that make insulin.
But the person must have the gene(or genes)for diabetes to start' out with一this means you can't get diabetes just from catching a flu,virus,or cold.And this type of diabetes isn't caused by eating too many sugary foods,either.Diabetes can take a long time to develop in a person's body-sometimes months or years?Another important thing to remember is that diabetes is not contagious.______(50)
______(48)
A.Genes are something that you inherit from your parents,and they are in your body even before you're born.
B.This sugar-fuel is called glucose?
C.It may be possible to beat insulin resistance through lifestyle changes.
D.You can't catch diabetes from people who have it,no matter how close you sit to them or if you kiss them.
E.The glucose can't get into the cells of the body without insulin.
F.When a person has this kind of diabetes,the pancreas usually can still make insulin,but the person's body needs more than the pancreas can make?
[填空题]电机发热由( ),电机风扇损坏,轴承润滑油不够或变质,( )等引起。
[单选题]一只"220V.100W"的灯泡,接220V的电压,灯的电流是()
A.0.9
B.0.45
C.0.2
D.4.5
[单选题]测量结果与被测量真值之间的差是(____)。
A.偏差
B.测量误差
C.系统误差
D.偶然误差
[多选题]为了加强对各国垄断资本的协调和制约,防止彼此之间的激烈竞争可能引起的剧烈经济动荡,特别是防止发生全球性经济危机,在协商和合作的基础上,国际垄断资本建立起国际经济调节机制,以加强国际协调。国际经济协调的具体形式包括各种国际经济组织、国际经济协议以及地区性的经济组织和集团等。第二次世界大战以来,从事国际经济协调、维护国际经济秩序的国际性协调组织主要有( )。
A.西方七国集团首脑会
B.国际货币基金组织
C.世界银行
D.世界贸易组织
[单选题]低压系统接地,系统有一个直接接地点,电气装置的外露导电部分接至电气上与低压系统的接地点无关的接地装置的系统属于( )系统。
A.TN系统
B.TF系统
C.IT系统
D.TT系统
[单项选择]{{B}}Passage One
Questions 26 to 28 are based on the passage you have just heard.{{/B}}
A. Because it can treat emotional problems and stone kinds of cancer.
B. Because it can make stores brighter.
C. Because it can make skin tender.
D. Because people want to stay away from dark places.
[判断题]( )商业品类宽度是指商业企业每个品类应发展的品牌(规格)目标数量。
A.正确
B.错误
[单选题]一级动火工作的过程中,应每隔( )h测定一次现场可燃气体、易燃液体的可燃蒸汽含量是否合格,当发现不合格或异常升高时应立即停止动火,在未查明原因或排除险情前不准动火。
A.2~4
B.2~5
C.3~5
D.4~5
[单项选择]下列食物中富含最理想的天然优质蛋白质的是()
A. 牛奶
B. 牛肉
C. 猪肉
D. 鱼肉
E. 鸡蛋
[单选题]最近,一项关于体重与死亡率的研究让人___。该研究认为,按照国际____的体重评价标准,超重人群比体重正常人群在同一时期内的死亡率可能要低6%。这一结果一经公布,立即掀起了轩然大波,因为大众媒体数十年来一直_____________的观念是,超重甚至是适度的体重增加都不利于健康。
填入划横线部分最恰当的一项是:
A.啼笑皆非 公认 同意
B.出乎意料 通行 宣传
C.匪夷所思 现行 强调
D.无话可说 认可 灌输
[单选题]根据《安全事故调查规程》,600兆瓦以上锅炉因安全故障中断运行240小时以上者属于()
A.特别重大设备事故
B.重大设备事故
C.较大设备事故
D.一般设备事故
[多选题]连墙件设置位置应符合下列哪些规定要求( ).
A.偏离主节点的距离不应大于300 mm
B.偏离主节点的距离不应大于350 mm
C.宜靠近主节点设置
D.应从脚手架底层第一步纵向水平杆处开始设置
E.应在脚手架第二步纵向水平杆处开始设置
[单项选择]工程师应在收到有关期中付款报表和证明文件后()天内向业主发出期中付款证书。
A. 7
B. 14
C. 28
D. 30
[简答题]生产经营单位的主要负责人对本单位安全生产工作负那些责任?
[单项选择]宫颈粘连可致()
A. 术中剧烈下腹痛
B. 术中心动过缓、面色苍白、出汗,血压下降
C. 术后持续阴道流血
D. 术后白带增多,下腹痛伴发热
E. 术后闭经伴周期性下腹痛
[单项选择]软件测试的目的是 (32) 。通常 (33) 是在代码编写阶段可进行的测试,它是整个测试工作的基础。逻辑覆盖标准主要用于 (34) 。它主要包括条件覆盖、条件组合(多重条件)覆盖、判定覆盖、条件及判定覆盖、语句覆盖、路径覆盖等几种,其中除路径覆盖外最弱的覆盖标准是 (35) ,最强的覆盖标准是 (36) 。
A. 条件覆盖
B. 条件组合覆盖
C. 语句覆盖
D. 条件及判定覆盖
[单选题]造成离心泵气缚原因是()
A.安装高度太高
B.泵内流体平均密度太小
C.入口管路阻力太大
D.泵不能抽水
[填空题]
{{B}}SECTION A{{/B}}
{{I}} Complete the gap-filling task. Some of
the gaps below may require a ma: cimum of THREE words. Make sure the word(s) you
fill in is (are) both grammatically and semantically acceptable. You may refer
to your notes.{{/I}}
{{B}}Using a Library{{/B}}
Making good use of the college
library might be a maximal help to students’ study. To get access to the
library, the student should know how to use his library more easily and more
efficiently.
{{B}} Ⅰ. Borrowing Books{{/B}}
1. To
make sure that the book is{{U}} (1) {{/U}}
(1) ______
2. To find out where the book is-consult the
catalogues cards arranged in alphabetical order:
1) in the
center--the author’s name ({{U}} (2) {{/U}}comes first)
(2) ______
2) the top
left hand corner-the book’s number
the class number ({{U}}
(3) {{/U}}areas)
[单选题]应停列车擅自在站通过,属于什么事件?
A.A级事件
B.B级事件
C.C级事件
D.D级事件
[判断题]换向器薄膜的不正常状态,主要有以下几种:黑痕、条纹、电刷轨痕、表面磨光。
A.正确
B.错误
[单选题]采用网络测试工具( )可以进行光纤长度、光纤的传输衰减、接头衰减和故障定位等的测量。
A.OTDR
B.TDR
C.BERT
D.Sniffer