热门试题:
[多选题]利用水压图分析热水供热（暖）系统中管路的水力工况，可以得到以下结果（ ）。[2.0分]
A. 利用水压曲线，可以确定管道中任何一点的压力（压头）值。
B. 利用水压曲线，可表示出各段的压力损失值。
C. 根据水压曲线的坡度，可以确定管段的单位管长的平均压降的大小。水压曲线越徒，管段的单位管长的平均压降就越大。
D. 由于热水管路系统是一个水力连通器，因此，只要已知或固定管路上任意一点的压力，则管路中其他各点的压力也就已知或确定了。
[单项选择]未经有关部门批准，医师擅自开办诊所，卫生行政部门可采取的措施不包括
A. 没收违法所得
B. 责令赔偿患者损失
C. 没收药品、器械
D. 吊销执业证书
E. 取缔
[判断题]钴钼催化剂对人的眼睛有轻微的刺激，可能会引起皮肤过敏。
[单选题]矿井高压电网，必须采取措施限制单相接地电容电流不超过()。
A.A、10A
B.B、20A
C.C、30A
D.D、40A
[多项选择]感觉神经损害包括（）
A. 感觉异常
B. 肌萎缩
C. 感觉缺失
D. 疼痛
E. 肌痉挛
[填空题]消防喷头有很多种,有开式和闭式之分,闭式又分为易熔元件闭式喷头和 （） 闭式喷头等,用得最多的是（红色）68℃喷头温级
[判断题]安装好的软横跨未加负荷时,要求上部固定绳的绝缘子必须于横向承力索的电分段绝缘子在同一垂直面上。( )
A.正确
B.错误
[单项选择]一般水泵中修周期为（）个月。
A. 12
B. 6
C. 4
D. 无明确规定
[单项选择]
A
To discover whether bees can see colors, the following experiment is set up. A table is put in a garden, and on the table is a piece of blue cardboard (硬纸板) with a drop of syrup (糖浆) on it. After a short time, bees come to the syrup. The bees then fly to their hive (蜂窝) and give the syrup to other bees in the hive. Then they return to the feeding-place which they have discovered. After a while, the blue cardboard with the syrup on it is taken away. Instead of this card, a blue card is now put on the left side of the first feeding-place and a red card to its right. These now cards have no syrup on them. Thus, the blue card is on the left, the red card on the right, and there is nothing where the first blue feeding card used to be. Very soon bees arrive again, and fly straight to the blue card. None go to the red card.
According to the article, you think the bees（）
A. cannot see colors
B. sometimes can see colors
C. seeing colors or not it was not understood by people
D. can see colors
[单项选择]
A new study warns that about thirty percent of the world’s people may not have enough water by the year 2025.
A private American organization called Population Action International did the new study. It says more than three-hundred-thirty-five-million people lack enough water now. The people live in twenty-eight countries. Most of the countries are in Africa or the Middle East.
Mr. Engelman says the population in countries that lack water is growing faster than in other parts of the world. He says population growth in these countries will continue to increase.
The report says lack of water in the future may result in several problems. It may increase health problems. Lack of water often means drinking waters not safe. Lack of water may also result in more international conflict. Countries may have to compete for water in the future. Some countries now get sixty percent of their fresh water from other countries. This is true of Egypt, the Netherlands,
A. diseases carried in water make drinking water not safe
B. there will be more international conflict resulted from water
C. Egypt will import fresh water from other countries
D. some countries’ development will be affected
[多选题]检修前应确认（）。
A.检修对象相关系统运行正常
B.需转移的业务已完成转移
C.停用的业务已经过相关业务部门的同意
D.电力通信网运行中无其他影响本次检修的异常情况
[单选题]依据《中国南方电网有限责任公司电力安全工作规程》,双签发是指外单位人员办理工作票时,工作票经外单位签发后,由( )审核并签发(即会签)的过程。
A.设备运维单位
B.调度管理部门
C.安全监管部
D.建设管理部门
[单选题]CO2气体保护焊有一些不足之处,但( )不是CO2焊的缺点。
A.飞溅较大,焊缝表面成形较差
B.设备比较复杂,维修工作量大
C.焊缝抗裂性能较差
D.氧化性强,不能焊易氧化的有色金属
[单选题]盗窃公私财物，数额较大或者多次盗窃的，处三年以下有期徒刑、拘役或者管制，并处或者单处（ ）。
A.罚金
B.没收财产
C.管制
D.拘役
[单项选择]单站检查在下列哪个阶段进行：（）
A. 启动
B. 计划
C. 实施
D. 现场结束
[多项选择]我们国家纪年的方法有（）
A. 干支纪年法
B. 帝号纪年法
C. 地支纪年法
D. 皇帝年号纪年法
[单项选择]女性，32岁，反复腰痛、尿频、尿痛3天。尿常规：WBC30～40/HP，RBC20～30/HP。中段尿培养有细菌生长。肾脏B超：双侧肾可见与肾锥体分布一致的强回声团，呈放射状排列，见多个小结石。1年前IVP示：双侧肾脏见多数囊肿和扩张的小管，肾锥体被造影剂充盈，出现不规则阴影，呈花束状。考虑诊断是（）
A. 多囊肾、肾结石、尿路感染
B. 髓质海绵肾、肾结石、尿路感染
C. 多囊肾、肾结石、肾盂肾炎
D. 肾积水、肾结石、逆行性尿路感染
E. 髓质囊性病、肾结石、合并泌尿系感染
[多选题]《电力监管条例》规定,电力企业发生电力生产安全事故,应当()。电力监管机构接到发生重大电力生产安全事故报告后,应当按照重大电力生产安全事故处置预案,及时采取处置措施。电力监管机构按照国家有关规定组织或者参加电力生产安全事故的调查处理。
A.及时采取措施
B.防止事故扩大
C.向电力监管机构报告
D.向其他有关部门报告
[单选题]下列行为属于行政处罚的范围是( )。
A.某食品药品监督局责令某食品厂召回其不符合食品安全标准的上市食品
B.某工商局对一企业有效期届满未申请延续的营业执照予以注销
C.某卫生局对流行性传染病患者强制隔离
D.某公安交管局暂扣违章驾车张某的驾驶执照六个月
[单项选择]食物：饥饿( )
A. 衣服：寒冷
B. 问题：回答
C. 开水：喝
D. 门：锁
[多选题]2号线：微机联锁设备电源停电或轨道电路停电接/发车作业()。
A.准备进路：人工排列接/发车进路
B.锁闭进路：使用勾锁器对进路上的所有道岔加锁
C.确认进路：双人共同确认，以列车为参照物“由远及近”确认进路正确后向信号楼报告
D.行车凭证：信号楼值班员接/发车通知
[填空题]
Gender-Neutral Language
[A] The practice of assigning masculine gender to neutral terms comes from the fact that every language reflects the prejudices of the society in which it evolved, and English evolved through most of its history in a male-centered, patriarchal society. Like any other language, however, English is always changing. One only has to read aloud sentences from the 19th century books assigned for this class to sense the shifts that have occurred in the last 150 years. When readers pick up something to read, they expect different conventions depending on the time in which the material was written. As writers in 1995, we need to be not only aware of the conventions that our readers may expect, but also conscious of the responses our words may elicit. In addition, we need to know how the shifting nature of language can make certain words awkward or misleading. "Man"
[B] Man once was a truly generic word referring to
[单项选择]Land belongs to the city; there is ______thing as private ownership of land.
A. no such a
B. not such
C. not such a
D. no such
[单选题]铭牌上的电压写380 V／220 V，接法写y／Δ时表明电动机每相定子绕组的额定电压为( )。
A. 380 V
B.220 V
C.380 V或220 V
D.380 V／220 V
[单选题]对200L桶组托时，托盘上有几桶，不能完成组托？
A.3
B.4
C.2
D.6
[单项选择]身无病，每三月一行经者
A. 激经
B. 暗经
C. 居经
D. 避年
E. 并月
[单项选择]在讨论发动机控制模块基于氧传感器的反馈信号调整喷油脉冲宽度时，技师甲说当氧传感器输入高电位信号时，说明混合气偏浓，应减小喷油脉冲宽度；技师乙说，当氧传感器输入低电位信号时，说明混合气偏稀，应增大喷油脉冲宽度。请问谁的说法正确？（）
A. 只有甲正确
B. 只有乙正确
C. 两人均正确
D. 两人均不正确
[多选题]（第十九条）在地质灾害现场救援时，要事先( )，在靠近远离山体的道路一侧行进，严防发生次生灾害造成人员伤亡。( )
A.设置观察哨
B.制定紧急撤离方案
C.统一撤离信号
D.明确撤退路线
E.收整器材装备
[单选题]以下哪种模式下列车驾驶完全由司机负责（ ）。
A、AM模式 B、RM模式 C、EUM模式 D、CM模式
A.A
B.B
C.C
D.D
[单选题]如果你到过杭州，一定不会忘记那条文艺范儿十足的地铁。壁画泥雕、水墨石凳……无处不在的“江南风”让人们在地下空间也能欣赏到风景。但你可曾知道，为留住这些文化记忆，舍弃的广告收入每年至少有2000万元。可惜，许多城市规划者并不愿为公共文化空间买单，商业利益的诱惑与低俗审美的偏差，令整个城市与人的心灵渐行渐远。从上段文字可推出：( )
A.每座城市都有独特的公共文化空间
B.公共文化空间要在商业和文化中寻找平衡
C.地铁空间正在成为城市文化的又一载体
D.城市文化空间的设置会让广告收入锐减
[单选题]人民解放战争走向胜利的历史转折点是_____
A.粉碎重点进攻
B.战略反攻
C.三大战役
D.渡江作战
[单选题]病人,男性,30岁。因急性心包炎后出现心包积液。该病人的表现不可能出现
A. 胸痛
B. 呼吸困难
C. 面色苍白、发绀
D. 动脉血压升高
E. 颈静脉怒张
[单项选择]In the United States elementary education begins at the age of six. At this stage nearly all the teachers are women, mostly married. The atmosphere is usually very friendly, and the teachers have now accepted the idea that the important thing is to make the children happy and interested. The old authoritarian (要绝对服从的) methods of education were discredited (不被认可) rather a long time ago—so much so that many people now think that they have gone too far in the direction of trying to make children happy and interested rather than giving them actual instruction.
The social education of young children tries to make them accept the idea that human beings in a society need to work together for their common good. So the emphasis is on cooperation rather than competition throughout most of this process. This may seem curious, in view of the fact that American society is highly competitive; however, the need for making people sociable in this sense has come to be regarded as
A. favorable
B. negative
C. tolerant
D. unfriendly
[多选题]硬质合金刀具的( )高于高速钢刀具。
A.硬度
B.耐磨性和耐热性
C.韧性
D.抗粘结性
[单选题]当需经过断电区位置时，列车应以不小于（）公里/小时的速度通过，除紧急情况下不得施加制动、不得停车
A.5
B.10
C.15
D.20
[简答题]哪些操作值班调度员可不用填写操作指令票，但应做好记录？
[多选题]根据《城镇燃气设施运行、维护和抢修安全技术规程》CJJ51-2016 规定:燃气设施包括。( )
A.厂站
B.管网
C.用户燃气设施
D.监控及数据采集系统等
E.手持检漏仪器
