相关试题
【单选题】
隐性感染后获得的免疫属于：___
A. 人工被动免疫
B. 人工自动免疫
C. 自然自动免疫
D. 自然被动免疫
E. 过继免疫
【单选题】
胎儿从母体获得IgG属于：___
A. 人工被动免疫
B. 人工自动免疫
C. 自然自动免疫
D. 自然被动免疫
E. 过继免疫
【单选题】
下列情况属于自然被动免疫的是：___
A. 天然血型抗体的产生
B. 通过注射类毒素获得的免疫
C. 通过注射抗毒素获得的免疫
D. 通过隐性感染获得的免疫
E. 通过胎盘、初乳获得的免疫
【单选题】
下列哪中属于免疫增强剂？___
A. 环孢素A
B. 环磷酰氨
C. 皮质激素
D. 硫唑嘌呤
E. 左旋咪唑
【单选题】
下列哪中属于免疫抑制剂？___
A. 左旋咪唑
B. 卡介苗
C. IFN-
D. 环磷酰胺
E. 短小棒状杆菌
【单选题】
下列哪项不是人工被动免疫的生物制品___
A. 抗毒素
B. 丙种球蛋白
C. 转移因子
D. 胸腺素
E. 类毒素
【单选题】
如果长期使用免疫抑制剂易出现的不良后果是___
A. 感染和超敏反应发病率高
B. 感染和肿瘤的发病率高
C. 超敏反应与免疫缺陷病发病率高
D. 超敏反应与自身免疫病发病率高
E. 感染与自身免疫
【单选题】
免疫增强剂应用与哪些疾病的治疗___
A. 恶性肿瘤和自身免疫病
B. 恶性肿瘤和超敏反应
C. 免疫缺陷病和超敏反应
D. 移植排斥反应和恶性肿瘤
E. 恶性肿瘤和免疫缺陷病
【单选题】
哲学的基本问题是___
A. 社会和自然的关系问题
B. 思维与存在的关系问题
C. 政治和经济的关系问题
D. 实践和理论的关系问题
【单选题】
电网建设《安规》适用于公司系统___ kV及以上新（扩、改）建及公司所属单位承揽的公司系统以外的电网工程。
A. 10；
B. 35；
C. 110；
D. 220
【单选题】
下列选项不符合施工分包规定的是___。
A. 分包单位不得超越资质范围承揽工程；
B. 劳务分包人员安全教育培训纳入承包单位统一管理；
C. 先签订分包合同，待人员全部进场后方可签订安全协议；
D. 施工分包应依据施工承包合同的约定
【单选题】
安全施工方案交底应由___负责完成。
A. 技术负责人
B. 编制人
C. 审核人
D. 安全负责人
【单选题】
当作业人员或机械器具与220kV带电设备的最小距离小于___m时，施工项目部应进行现场勘察，编写安全施工方案，并将安全施工方案提交运维单位备案。
【单选题】
作业票由___填写，安全、技术人员审核，作业票A由施工队签发，作业票B由施工项目经理签发。
A. 安全负责人；
B. 现场监护人；
C. 施工队长；
D. 作业负责人
【单选题】
己签发或批准的作业票应由___收执，签发人宜留存备份。
A. 作业负责人；
B. 专责监护人；
C. 技术负责人；
D. 安全负责人
【单选题】
需要变更作业成员时，应经___同意，在对新的作业人员进行安全交底并履行确认签字手续后，方可进行工作。
A. 作业票签发人；
B. 作业负责人；
C. 作业许可人；
D. 专责监护人
【单选题】
作业票签发人是负责该项作业的___。
A. 技术负责人；
B. 安全责任人；
C. 安全监护人；
D. 施工负责人
【单选题】
下列选项不符合作业监护规定的是___
A. 作业负责人要及时纠正作业人员的不安全行为；
B. 根据现场安全条件、施工范围和作业的需要，增设专责监护人，并明确其监护内容；
C. 专责监护人不得兼做其他工作；
D. 专责监护人需长时间离开作业现场时，可以指派专人代替
【单选题】
根据现场安全条件、施工范围和作业需要，增设___，并明确其监护内容。
A. 作业人员；
B. 作业负责人；
C. 监理人员；
D. 专责监护人
【单选题】
作业票工作内容完成后，应清扫整理作业现场，作业负责人应检查作业地点状况，落实现场安全防护措施，并向___汇报。
A. 安全监护人；
B. 监理工程师；
C. 作业票签发人；
D. 作业许可人
【单选题】
道路施工现场的机动车辆应限速行驶，行驶速度一般不得超过___km/h；并应在显著位置设置限速标志。
A. 15；
B. 25；
C. 20；
D. 30
【单选题】
施工用金属房内配电设备前端地面应铺设___。
A. 绝缘橡胶板；
B. 瓷砖；
C. 地毯；
D. 工业自流坪
【单选题】
器材应按规定堆放，绝缘了应包装完好，堆放高度不宜超过___m。
A. 3.5；
B. 2；
C. 2.5；
D. 3.0
【单选题】
lOkV/400kVA及以下的变压器宜采用支柱上安装，支柱上变压器的底部距地面的高度不得小于___m。
A. 1.5；
B. 2.0；
C. 2.5；
D. 1.0
【单选题】
变压器中性点及外壳接地应接触良好，连接牢固可靠，工作接地电阻不得大于___Ω。
【单选题】
低压电力电缆中应包含全部工作芯线和用作工作零线、保护零线的芯线。其中___色芯线用作工作零线(N线)。
【单选题】
移动开关箱至固定式配电箱之问的引线长度不得大于___m，且只能用绝缘护套软电缆。
A. 50；
B. 60；
C. 40；
D. 45
【单选题】
施工用电电源采用中性点直接接地的专用变压器供电时，其低压配电系统的接地型式宜采用___。
A. TN-C-S接零保护系统；
B. TN-S接零保护系统；
C. TN接零保护系统；
D. N-C接零保护系统
【单选题】
接地装置人工接地体的顶面埋设深度不宜小于___m。
A. 0.5；
B. 0.6；
C. 0.55；
D. 0.45
【单选题】
用电单位应建立施工用电安全岗位责任制，明确各级用电___。
A. 技术负责人；
B. 安全监护人；
C. 安全责任人；
D. 工作负责人
【单选题】
末级配电箱中剩余电流动作保护装置（漏电保护器）的额定动作电流不应大于___ mA，额定漏电动作时间不应大于O.ls。
A. 35；
B. 40；
C. 50；
D. 30
【单选题】
配电箱送电应按照___顺序进行操作。
A. 总配电箱→分配电箱→末级配电箱；
B. 分配电箱→末级配电箱→总配电箱；
C. 总配电箱→末级配电箱→分配电箱；
D. 末级配电箱→分配电箱→总配电箱
【单选题】
凡在距坠落高度基准面___ m及以上有可能坠落的高度进行的作业均称为高处作业。
A. 2；
B. 1.0；
C. 1.7；
D. 1.5
【单选题】
高处作业的人员应___体检一次。
A. 每年；
B. 半年；
C. 一年半；
D. 每两年
【单选题】
高处作业人员应衣着灵便，衣袖、裤脚应扎紧，穿___，并正确佩戴个人防护用具。
A. 皮鞋；
B. 平底鞋；
C. 绝缘靴；
D. 软底防滑鞋
【单选题】
高处作业的平台、走道、斜道等应装设不低于1.2m高的护栏，并设___mm高的挡脚板。
A. 180；
B. 150；
C. 120；
D. 110
【单选题】
在气温低于-1O℃进行露天高处作业时，施工场所附近宜设___，并采取防火措施。
A. 帐篷；
B. 热饮点；
C. 取暖休息室；
D. 防护棚
【单选题】
自制的汽车吊高处作业平台，应经计算、验证，并制定操作规程，经施工单位___批准后方可使用。
A. 工程部；
B. 安监部；
C. 设备管理部；
D. 分管领导
【单选题】
下列选项不符合交叉作业规定的是___。
A. 作业前，应明确交叉作业各方的施工范围及安全注意事项；
B. 在吊物下方接料时要安排专人指挥；
C. 交叉作业现场应设置专责监护人；
D. 交叉作业场所应保持充足光线
【单选题】
有限空间作业应坚持___的原则，作业前应进行风险辨识，分析有限空间内气体种类并进行评估监测，做好记录。
A. 先通风、再检测、后作业；
B. 边通风、边作业；
C. 先通风、再作业；
D. 边检测、边作业
推荐试题
【单选题】
Q1: What is special about this year’s Black Friday shopping?___
A. Some stores offered bigger holiday discounts .
B. Some stores provided more choices of nightlife.
C. Some stores made efforts to attract young people .
D. Some stores opened much earlier than they used to .
【单选题】
Q2: Why did some stores open at midnight on Thanksgiving night?___
A. To attract young customers .
B. To beat other stores for sale.
C. To let people sleep late the next day .
D. To keep people stay up for the night .
【单选题】
Q3: How many Black Friday shoppers were reported to go to the shops at midnight this year?___
A. 24 percent .
B. 37 percent .
C. 9.5 percent .
D. 23.5 percent .
【单选题】
Q4: What can we learn about the 15-year-old Jenny?___
A. She and her cousins went back home at midnight .
B. She liked the traditional 4 a.m. Black Friday.
C. She preferred midnight shopping to early morning shopping .
D. She and her cousins got up very early to buy discounted items .
【单选题】
Q1: Why did the woman decide to do a triathlon?___
A. Because she did it in college .
B. Because she wanted to be tough .
C. Because her sister did it and liked it .
D. Because her sister said it was good for her .
【单选题】
Q2: When did the man first do a triathlon?___
A. Last year .
B. In college .
C. Last week .
D. In high school .
【单选题】
Q3: How does the man feel about running?___
A. Boring.
B. Scaring .
C. Exciting .
D. Interesting .
【单选题】
Q4: Why doesn’t the woman like swimming in the triathlon?___
A. Because she fears that a big fish might eat her .
B. Because she fears that she would get lost in lakes .
C. Because she doesn't want to scare away small fishes .
D. Because she doesn't like swimming with many people .
【单选题】
Q1: What is the ratio of positive to negative emotions that can make a person happier?___
A. 1:3.
B. 3 :1.
C. 1 :10 .
D. 10 :1.
【单选题】
Q2: What is the most exciting finding about increasing positive emotions?___
A. It improves relationships .
B. It leads to greater success .
C. It helps develop creativity .
D. It contributes to good health .
【单选题】
Q3: What does the speaker say about negative feelings?___
A. People should turn every negative feeling around .
B. Negative feelings can sometimes have positive effects .
C. Negative feelings often cause people to make mistakes .
D. People should never show negative feelings in public places .
【单选题】
Q4: What is the main idea of the passage?___
A. People should learn to manage their emotions .
B. People should be patient with their negative feelings .
C. People should learn to analyze causes of unhappiness .
D. People should identify as many positive feelings as possible .
【单选题】
Q1: What are the man and woman talking about?___
A. Whether nature is magical and kind .
B. Whether nature is powerful and full of risks .
C. Whether Christopher was well prepared for the trip .
D. Whether Christopher's trip to Alaska was worthwhile .
【单选题】
Q2: What can we learn about Christopher?___
A. He made a film about his trip to Alaska .
B. He wrote a story about his trip to Alaska .
C. He died while having an adventure in Alaska .
D. He learned how powerful and risky Alaska was .
【单选题】
Q3: What does the woman think about Christopher taking the trip to Alaska?___
A. He was too foolish .
B. He was really romantic .
C. He had a very kind heart .
D. He had a spirit for trying things .
【单选题】
Q4: Which of the following is NOT mentioned as something that would have saved Christopher’s life?___
A. A gun to hunt .
B. The map of the area .
C. Emergency food supplies .
D.
E. mergency communication equipment .
【单选题】
Q1: What speed can an avalanche reach within five seconds of taking off?___
A. At 8 miles an hour .
B. At 18 miles an hour .
C. At 80 miles an hour .
D. At 88 miles an hour .
【单选题】
Q2: According to the passage, under what circumstances may an avalanche occur?___
A. There are too many layers of snow on the .
B. There is a layer of snow covering an entire area .
C. The top layer of snow slides off the layer below it .
D. The layer of snow below the surface becomes unstable .
【单选题】
Q3: What are skiers advised to do to avoid being caught in an avalanche?___
A. Ski only in the official ski areas .
B. Look for solid snow to walk on .
C. Look out for each other while skiing .
D. Learn to control themselves in an avalanche .
【单选题】
Q4: Why does the ski patrol use explosives?___
A. To dig holes in the snow .
B. To close the area for skiing .
C. To make an avalanche move on purpose .
D. To' check how different layers are holding up .
【单选题】
Q1:What is conversation mainly about?___
A. The woman's happy college life the man's doubt .
B. The woman's spending habits and the man's concerns .
C. The man's reminding the woman of the exam this Thursday .
D. The man's support for the woman over the past 15 years .
【单选题】
Q2:What did the woman do last night?___
A. She bought a new leather coat .
B. She studied very hard for an exam .
C. She treated all her friends to dinner .
D. She went to a concert with her friends .
【单选题】
Q3:Where did the woman get the money?___
A. She just received her student loan .
B. She saved some money for herself .
C. She borrowed the money from her friends .
D. She asked her mom to send her the money .
【单选题】
Q4:What is the man?___
A. A teacher of biology .
B. An undergraduate student .
C. A freshman in biology class .
D. A graduate teaching assistant .
【单选题】
Q1: What is this passage mainly about?___
A. How businesses can compete with each other .
B. How small businesses operate during holidays .
C. How small businesses manage holiday workers .
D. How can earn more money during holidays .
【单选题】
Q2: According to Rubin, what can small companies do to thank holiday workers?___
A. Have talks with their families .
B. Give them good extra benefits .
C. Offer them expensive holiday tokens .
D. Show appreciation to them face to face .
【单选题】
Q3: What can small business owners do to help holiday workers get into the holiday spirit?___
A. Entertain them with big meals .
B. Let them enjoy some holiday games .
C. Give them handmade thank-you cards .
D. Send their families some holiday gift cards .
【单选题】
Q4: Who are supposed to benefit most from this passage?___
A. Workers who have to work during holidays .
B. Employees who intend to earn extra money .
C. Big companies that usually close on holidays .
D. Small businesses that try to be more competitive .
【单选题】
In the first two paragraphs of the passage the writer tries to tell us that___
A. he had lived in Washington D.C. for twenty years
B. he was very imaginative when he was a child
C. he had fond memories of his old neighborhood
D. )he had come from a very poor neighborhood
【单选题】
The writer ,as a child ,was very fond of playing in the basement because ___
A. it was bright and alive
B. it contained a movie house and a space station
C. it was ideal for playing hide-and-seek
D. it was surrounded by trees and flowers
【单选题】
How did the writer feel when he visited his old neighborhood in Washington D.C. ?___
A. Greatly surprised .
B. Very regretful .
C. Quite excited .
D. Very sad .
【单选题】
On his visit to his hometown ,the writer found the old apartment building___
A. see medunfit to live in
B. had been repaired
C. could hardly be recognized
D. looked dirty and smelt horrible
【单选题】
" Youcan never go home again "inthe last sentence of this passage means that___
A. one should never revisit his hometown after many years of absence
B. one will never find his hometown the same as it was in his childhood memory
C. avisit to one's hometown will bring back one's fond memories of home
D. avisit to one's hometown will bring back many sad memorie
【单选题】
We learn from the passage that Tracy died___
A. on December 8,1992
B. of brain damage
C. 24 hours after he fell off the roof of a car
D. in a car crash
【单选题】
Tracy's parents decided to donate Tracy's organs because___
A. Tracy told them to do so just before he died
B. they wanted to save others the pain of seeing a dear one die
C. David's life could continue in a meaningful way
D. they knew David was suffering from a hopeless liver disease
【单选题】
The meeting between the writer's family and Tracy's parents was arranged because___
A. the writer and her husband wished to express their thanks to Tracy's parents
B. the local organ bank wanted to see how both families felt about the donation
C. Tracy's parents wanted to see someone whose life had been saved by the donation
D. the two families were linked by the most bittersweet ties imaginable
【单选题】
The writer and her husband learned how Tracy died___
A. from his parents
B. from the organ bank
C. from the hospital
D. from the doctor who performed the operation
【单选题】
The meeting between the two families helped to ease the Marshes'suffering because___
A. they saw that David looked very much like their son
B. they saw that David had regained health with Tracy's liver
C. they now had someone to share their memories of Tracy
D. they now knew for sure they had done the right thing
【单选题】
The writer's first marriage was unsuccessful because___
A. her husband often woke her up at midnight
B. her husband kept criticizing her
C. she was so unattractive
D. she had a self-esteem problem
【单选题】
When the writer asked for a divorce ,her husband___
A. told her that she would never find one who loved her as he did
B. delayed two years before giving her a reply
C. accused her of having an affair
D. said that she was unattractive and not worth loving
