相关试题
【单选题】
机体内物质转化和能量转化过程有赖于气的___
A. 推动作用
B. 温熙作用
C. 固摄作用
D. 气化作用
E. 防御作用
【单选题】
下列哪一项是人体正常水液的总称___
A. 体液
B. 阴液
C. 津液
D. 津
E. 液
【单选题】
津液化为汗液排出体外，主要依赖于什么作用___
A. 心主血脉
B. 肺主宣发
C. 肾主气化
D. 肝主疏泄
E. 脾主统摄
【单选题】
下列除哪一项外均是血液正常运行所必需的条件___
A. 血液充盈
B. 脉道通畅
C. 肺脾肾功能正着
D. 心气充沛
E. 三焦通利
【单选题】
气能生津的机理是___
A. 气为生津的物质基础
B. 气为生津的动力
C. 气为生津的物质基础和动力
D. 气能化生精气
E. 气能生血，血能化津
【单选题】
血和津液生成的共同物质来源是___
A. 水谷精微
B. 宗气
C. 精
D. 元气
E. 营气
【单选题】
昼行于阳，夜行于阴的气是___
A. 营气
B. 卫气
C. 元气
D. 宗气
E. 肾气
【单选题】
“夺血者无汗”的生理基础是___
A. 肝肾同源
B. 乙类同源
C. 津血同源
D. 精血同源
E. 以上均不是
【单选题】
Q1: What does the man suggest that the woman do this weekend?___
A. Read J .K .Rowling's first book .
B. Go to buy a new Harry Potter book .
C. Watch BBC news about J .K .Rowling .
D. Take her cousin to see a new Harry Potter movie .
【单选题】
Q2: Where did J. K. Rowling come up with the idea for Harry Potter?___
A. At a cafe .
B. On a train .
C. At a cinema .
D. In a bookstore .
【单选题】
Q3: What are J. K. Rowling’s future plans?___
A. She won't write any more books .
B. She will write more magic stories .
C. She hasn't said anything about her future plans .
D. She said she would work on more serious subjects .
【单选题】
Q4: What are the two speakers mainly talking about?___
A. J.K. Rowling's secret .
B. J .K .Rowling's writing plan .
C. A new book by J .K.Rowling.
D. An interview with J .K .Rowling .
【单选题】
Q1: What happened when Stephen tried to remove a bottle of milk from the refrigerator?___
A. He broke the milk bottle .
B. He fell down on the floor .
C. He made a mess inside the refrigerator .
D. He spilled the milk over the kitchen floor .
【单选题】
Q2: What did Stephen’s mother do when she came into the kitchen？___
A. She gave him a long lecture .
B. She shouted at him in anger .
C. She enjoyed the wonderful mess .
D. She cleaned up the mess with him .
【单选题】
Q3: What did Stephen’s mother teach him later?___
A. How to do an experiment .
B. How to carry a milk bottle .
C. How to clean up spilled milk .
D. How to avoid making mistakes .
【单选题】
Q4: What did Stephen learn from this experience?___
A. Mistakes can become learning opportunities .
B. Mistakes are just like scientific experiments .
C. One should sometimes make mistakes .
D. One should try to avoid making mistakes .
【单选题】
Q1: Why is surfing the man’s favorite activity?___
A. Because he likes the sunny weather.
B. Because he wants to challenge himself .
C. Because it can help solve his sleeping problem .
D. Because it can help him forget all his troubles .
【单选题】
Q2: What is the woman going to do this weekend?___
A. To go sailing .
B. To go surfing .
C. To go to the beach .
D. To go to her nephew's .
【单选题】
Q3: What does the woman love doing?___
A. Going to visit relatives.
B. Enjoying the warm sun on the beach .
C. Building sand castles with her niece and nephew .
D. Playing in the sand and jumping in the waves .
【单选题】
Q4: What does the man remember doing with his brothers?___
A. Surfing in the sea .
B. Collecting seashells .
C. Building sand castles .
D. Jumping in the waves .
【单选题】
Q1: According to the survey, what percentage of British adults watched TV in theirfree time?___
A. 89 percent .
B. 84 percent .
C. 76 percent .
D. 71 percent .
【单选题】
Q2: Which age group would be the most likely to visit their friends and relatives?___
A. People aged 16 to 24
B. People aged 25 to 34 .
C. People aged 16 and over .
D. People aged 55 and over .
【单选题】
Q3: What does the speaker say about listening to music as a leisure activity for British people?___
A. People aged 16 to 24 preferred listening to music most .
B. It was getting more and more popular among the British people .
C. It was the third most popular activity among people aged 55 and over .
D. People aged 25 to 34 listened to music more often than those aged 16 to 24 .
【单选题】
Q4: According to the survey, how are leisure activities related to age?___
A. Older people go out to pubs more often . frequently .
B. Younger people go to the cinema less frequently.
C. Older people spend more time reading and gardening .
D. Younger people spend less time visiting friends and family .
【单选题】
Q1: Why was the girl excited?___
A. She is going to have a lot of vanilla ice cream .
B. She won the spelling competition at her school .
C. She is going to the state capital for a competition .
D. She "excellence"correctly,but others didn't .
【单选题】
Q2: What happened when the man was 13 years old?___
A. His family moved to Sacramento to settle down .
B. His family bought him a new suit and a new tie .
C. He went to Sacramento for a spelling competition .
D. He won the first prize in the state spelling competition .
【单选题】
Q3: Why did the man’s mom give him a big hug?___
A. To make him feel better after he lost the first prize .
B. To apologize for not buying him some ice cream .
C. To wish him good luck in the next competition .
D. To congratulate him on winning the first prize .
【单选题】
Q4: What color is the girl going to wear for her next competition?___
A. Red .
B. Blue .
C. Green .
D. Yellow .
【单选题】
Q1: What is this passage mainly about?___
A. Superstitions and science .
B. Tips on how to have good luck .
C. Superstitions in the United States .
D. Rational and superstitious societies .
【单选题】
Q2: According to the passage, what is considered as bad luck?___
A. Walking under a ladder .
B. Dreaming of a black cat .
C. Hanging a mirror in the house .
D. Stepping on one's own shadow .
【单选题】
Q3: Why is it considered bad luck to see a black cat crossing one’s path?___
A. Because black cats look like witches . e witches .
B. Because black cats were thought to be witches .
C. Because black cats bring seven years of bad luck .
D. Because black cats are hard to notice in darkness .
【单选题】
Q4: According to the passage, what will bring people good luck?___
A. Breaking a mirror on purpose .
B. Catching a falling leaf on one's birthday .
C. Finding a on the ground and picking it up .
D. Dreaming of blowing out the candles in one blow .
【单选题】
Q1: How long will the woman spend on her way to and from work by high-speed train?___
A. 4 hours .
B. 2 hours .
C. 1.5 hours .
D. 45 minutes .
【单选题】
Q2: When does the woman arrive back home by subway?___
A. At 8 .
B. At 7 .
C. At 6 .
D. At 5 .
【单选题】
Q3: According to the woman, in what way will the new high-speed train be a big help to her?___
A. She can either read or rest a little on the train .
B. She can read and respond to emails onthe train .
C. She can travel to many different parts of the city .
D. She can go shopping on her way home from work .
【单选题】
Q4: How will the new high-speed train affect the man?___
A. He can take the train to the old part of the city .
B. He can save a lot of money when he takes the train .
C. He can save 20 minutes to go to work with the train .
D. He can take the train to the airport instead of driving .
【单选题】
Q1: How much time on average do Americans spend on their way to work?___
A. About an hour .
B. More than an hour .
C. About half an hour .
D. More than one and a half hours .
【单选题】
Q2: What is the present situation about Americans’ commuting to work?___
A. More and more Americans spend over an hour getting to work .
B. Over 10 percent of Americans spend less than an hour getting to work .
C. Only New York people spend more than 90 minutes getting to work .
D. Over 10 percent of Americans spend more than 90 minutes getting to work .
【单选题】
Q3: Why does Steven choose to have an extreme commute?___
A. Because gas prices are not high .
B. Because the commute is not tiring .
C. Because he can attend a better school .
D. Because he can have his favorite lifestyle .
【单选题】
Q4: Which of the following is the disadvantage of long commutes?___
A. Traffic jams .
B. Expensive housing .
C. Poorer life quality .
D. A tiring and boring trip .
推荐试题
【单选题】
交流真空接触器-熔断器组合电器,___的使用空间。
A. 限制了接触器
B. 拓展了接触器
C. 限制了熔断器
【单选题】
电流互感器的一次绕组匝数很少,___在线路里,其电流大小取决于线路的负载电流。
【单选题】
___用具是登高作业时必须必备的保护用具。
【单选题】
高压配电网一般指35kV、___及以上电压等级的配电网。
【单选题】
电力系统进行无功补偿起到的作用之一是___。
A. 提高设备安全性
B. 提高设备可靠性
C. 提高设备利用效率
【单选题】
如图,正常运行时,母联断路器3QF断开,断路器1QF、2QF闭合,是标准的___。
A. 低压母线分段备自投接线
B. 变压器备自投接线
C. 进线备自投接线
【单选题】
人手触及带电设备外壳发生触电,这种触电称为___。
A. 接触电压触电
B. 直接接触触电
C. 跨步电压触电
【单选题】
电源进线电压为10KV的用户,一般总降压变压所将10KV电压降低到___V后,然后经低压配电线路供电到各用电场所,供给低压用电设备用电。
A. 500/400
B. 380/220
C. 380/260
【单选题】
在额定电压下,变压器铁损是一个恒定量,它随实际运行电压___,是衡量变压器能耗的重要指标。
A. 成反比变化
B. 成正比变化
C. 平方成正比变化
【单选题】
2000kW以下的电动机,如果___灵敏度不能满足要求时,也可采用电流纵差动保护代替。
A. 过负荷保护
B. 电流速断保护
C. 纵差动保护
【单选题】
电流互感器型号中,常用___表示瓷绝缘。
【单选题】
高压电容器应在额定电压下运行,当长期运行电压超过额定电压的___时,高压电容器组应立即停运。
【单选题】
单位导线截面所通过的电流值称为___。
【单选题】
事故情况下,在全站无电后,应将___支路断路器分闸断开。
【单选题】
完成工作许可手续后,___应向工作班人员交代现场安全措施、带电部位和其他注意事项。
A. 工作许可人
B. 被监护人员
C. 工作负责人
【单选题】
变、配电所主要由主变压器、___、控制系统等部分构成,是电网的发电厂重要组成部分和电能传输的重要环节。
A. 输电线路
B. 配电线路
C. 配电装置及测量
【单选题】
为防止直接雷击架空线路,一般多采用___。
【单选题】
___的特点是能够使读图者对整个二次回路的构成以及动作过程,都有一个明确的整体概念。
A. 安装接线图
B. 屏面布置图
C. 归总式原理图
【单选题】
绝缘靴(鞋)属于___。
A. 绝缘安全用具
B. 一般防护安全用具
C. 辅助安全用具
【单选题】
在中性点直接接地的电力系统中,发生单相接地故障时,非故障相对地电压___。
【单选题】
TT系统是指电源中性点直接接地,而设备的外露可导电部分经各自的PE线分别直接接地的___低压供电系统
A. 三相五线制
B. 三相四线制
C. 三相三线制
【单选题】
装设接地线必须___,而且接触必须良好。
A. 先接导体(设备)端,后接接地端,
B. 先接接地端,后接导体(设备)端,
C. 先测接地电阻,再接接地端
【单选题】
高压熔断器以动作特性可分为___和固定式。
【单选题】
电力电缆中,将线芯与大地以及不同相的线芯间在电气上彼此隔离的为___。
【单选题】
在室内高压设备上工作,应在工作地点两旁间隔的遮栏上悬挂:___。
A. 禁止合闸,线路有人工作
B. 止步,高压危险
C. 禁止攀登,高压危险
【单选题】
电气设备有三种工作状态,即运行、备用、___。
【单选题】
___可以将电力系统的一次大电流按一定的变比变换成二次较小电流,供给测量表计和继电器。
【单选题】
电压互感器的高压绕组与被测电路___,低压绕组与测量仪表电压线圈并联。
【单选题】
装设剩余电流保护器虽然是一种很有效的触电防护措施,但不能作为单独的___触电的防护手段,它必须和基本防护措施一起做好。
【单选题】
管型避雷器由___三部分组成。
A. 产气管、内部电极和外部间隙
B. 产气管、内部间隙和外部间隙
C. 产气管、内部间隙和外部电极
D. 产气管、内部电极和外部电极
【单选题】
在开关电器中,气体吹动电弧的方法为横吹时,气体吹动方向与电弧轴线相___。
【单选题】
线路验电应逐相进行。同杆架设的多层电力线路验电时,先验低压后验高压、___。
A. 先验上层后验下层
B. 验下层
C. 先验下层后验上层
【单选题】
隔离开关采用操动机构进行操作,便于在隔离开关与___安装防误操作闭锁机构。
A. 母线之间
B. 断路器之间
C. 与测量仪表之间
【单选题】
在一类负荷的供电要求中,允许中断供电时间在___小时以上的供电系统,可选用快速自启动的发电机组。
【单选题】
断路器的额定开断电流表明了断路器的___。
A. 长期允许最大工作电流
B. 灭弧能力
C. 绝缘水平
【单选题】
作用于人体的电压升高,人体电阻还会___,致使电流更大,对人体的伤害更严重。
【单选题】
当变压器过负载时,一般会发出___。
A. 很高且沉重的嗡嗡声
B. 很轻且细微的嗡嗡声
C. 很高且沉重的沸腾声
【单选题】
当验明设备确已无电压后,应立即将检修设备三相短路并___。
【单选题】
操作票填写中,合上或拉开的隔离开关,刀开关统称为___。
