热门试题:
[单选题]男,28岁。持续性胸闷、气促1周。查体:颈静脉怒张,心界向两侧扩大,心尖博动点位于心浊音界内1cm,音弱心脏各膜区未闻及杂音。心电图示窦性心动过速,低电压,广泛性T波低平。该患者最可能的诊断是
(0.2)
A. 扩张型心肌病
B. 急性渗出性心包炎
C. 感染性心内膜炎
D. 急性肺源性心脏病
E. 病毒性心肌炎
[填空题]The most famous case of an animal said to be capable of counting is that of a horse in Germany called Clever Hans. The episode (36) at the beginning of the present century. The horse’s owner (37) that animals can think and reason as we can and that this (38) can be brought out by training the animals. He trained Clever Hans to give the answers to (39) of arithmetic; the horse gave the (40) answer by tapping the right number of times with its forefoot.
The animals gave the correct answers not only to (41) but also to other processes of arithmetic, including (42) fraction to decimals. It gave the right answers too when the questions were not spoken but (43) to it written on a card.
(44) . The committee, after a careful investigation, found (45) , and that he had not purposely trained his horse to stop tapping, and so to give a correct answer, by giving it a slight clue as is done with
[单选题]不带反馈的共发射极晶体管放大器,在输出电压不失真时,其输入交流信号的幅度最大约为( )。
A.几 Ⅴ
B.几mV
C.0.6~0.7 V
D.1 V左右
[单项选择]
Sisters are often alike but they axe never exactly the same. In many (36) , one sister is often called "the pretty one" and the other "the (37) one" when they are still babies. Even young children think (38) is more important than brains.
"I envied my sister’s looks. She had long (39) hair and nice clothes and the most (40) . I hated her so much that I decided to (41) her. One day when the roof of the house was being re-paired, I (42) a brick out of a window (43) she was underneath (在下面). Thank God it (44) !" says one ashamed near-murderer. "I must have been about 10 at the time, and she was eight years old. (45) she tells me that she always felt (46) beside me in school because I was a (47) student and she was weaker (48) school work. But when you’re 14 or 15, you (49) attention and praise and you need boyfriends; good exam resu
A. boring
B. exciting
C. easy
D. hard
[单选题]【单选题】用管子滚动搬运应由专人负责指挥。管子承受重物后两端应各露出约( ),以便调节转向。
A.20Cm
B.30Cm
C.40Cm
D.50Cm
[多选题]扑救锂电池火灾时,应在厂方技术人员指导下进行,了解掌握各工序段的火灾危险性;有爆炸危险的厂库房应开窗通风、保持适当安全距离,使用大量水进行();指战员应做好安全防护,不得在厂房仓储场所内及门口危险区域脱卸呼吸器。( )
A.冷却降温
B.严防爆炸
C.化学沾染
D.高压触电伤人
[单项选择]下列不属于房地产心理定价策略的是( )。
A. “特价品”定价策略
B. 现金折扣定价策略
C. 尾数定价策略
D. 整数定价策略
[单选题]列车按运输性质分类,小运转列车属千()。
A.三类
B.四类
C.五类
D.六类
[单项选择]根据宴会的人数、菜肴的数量准备餐具,一般来说备用餐具不低于()。
A. 10%
B. 15%
C. 20%
D. 25%
[单项选择]由绕组或磁路组成的电气设备,由于设计不合理、运行不佳和磁路不正常引起的磁滞、磁饱和与漏磁,或者由于铁芯片间绝缘损坏,造成()时,均可引起局部发热。
A. 断路
B. 开路
C. 短路
D. 回路
[单项选择]下列电信业务收费项目中,没有实行市场调节价的是()。
A. 固定本地电话主叫号码显示费
B. 垄断经营的电信增值业务费
C. 移动电话SIM卡费
D. 卫星移动电话业务收费
[单项选择]依据现行的《防火卷帘》规定,无机纤维复合防火卷帘帘面所用各类纺织物常温下的断裂强度经向不应低于()N/5cm
A. 500
B. 550
C. 600
D. 650
[单选题]幽门梗阻患者手术前护理,下列哪项可减轻胃黏膜水肿,有利于术后吻合口愈合
A.纠正脱水
B.纠正低氯低钾性碱中毒
C.给予流质或禁食
D.术前数日晚用温等渗盐水洗胃
E.加强营养
[判断题]使用钳型电流表测量时,若需拆除遮栏,应在拆除遮栏后立即进行。工作结束,应立即将遮栏恢复原状。
A.正确
B.错误
[单选题] 计算机在电力传动的自动控制,一般分为( )。
A.生产管理级和过程控制级
B.单机控制和多机控制
C.直控级和监控级
D.管理级和监控级
[单项选择]软件的()是指理解软件、纠正软件系统出现的错误和缺陷,以及为满足新的要求进行修改、扩充或压缩的容易程度。
A. 可理解性
B. 可用性
C. 可靠性
D. 可维护性
[单选题]液态镶嵌模型最主要的特点是( )。
A.膜中的脂质及蛋白质都能横向运动
B.膜中只有脂质能横向运动
C.膜中只有蛋白质能横向运动
D.膜的流动性和其化学组成的高度不对称性
[多选题]( )严禁使用铁鞋制动。
A.曲线外轨
B.调车场以内的线路
C.外闸瓦车
D.直径950 mm的大轮车
E.直径950 mm以上的大轮车
[单项选择]下列药物中主要用于治疗阴道、胃肠道和口腔的念珠菌病的是( )
A. 制霉菌素
B. 灰黄霉素
C. 碘化物
D. 两性霉素B
[单选题]教育学上称“跳一跳可以摘到桃子”的时期为( )。
A.关键期
B.转折期
C.危机期
D.最近发展区
[单项选择]维吾尔族古代信仰过萨满教、摩尼教、景教、佛教等,( )世纪后主要信奉伊斯兰教。
A. 10
B. 11
C. 12
D. 13
[多项选择]公共部门人力资源战略本质是要保持一种()状态。
A. 非组织化
B. 非程序化
C. 非常规化
D. 不断创新
[单选题]当系统压力降至 kpa以下时,停放制动在停放制动控制面板的控制下自动启动。
A.200
B.300
C.350
D.450
[单选题]电力系统中常用的Y,d11接线的变压器,三角形侧的电流比星形侧的同一相电流,在相位上超前( )度。
A.60
B.30
C.120
[判断题]高架绝缘斗臂车应存放在干燥通风的车库内,其绝缘部分应有防尘措施。( )
A.正确
B.错误
[多选题]铁路信号分为( )。
A.视觉信号
B.听觉信号
C.机车鸣笛声
D.号角
[填空题]按()上的分工,产品可划分为物质产品、精神产品和劳务产品。
[单选题]换装电能表工作应断开( )开关或其他断路设备,不许带负荷更换。换装带有电流互感器的电能表还应先将端子排处的电流互感器二次回路短接后再更换,更换完毕、检查无误后再拆除
A.电源侧
B.负荷侧
C.带电
D.带负荷
[判断题]水泵电机接线调试时先检查电源电压是否正常,各指数是否正常。电机运转方向与水泵所需方向是否一致,声音是否正常。
A.正确
B.错误
[简答题]矿批重为14.0吨,理论批铁量为7.90吨,湿焦负荷为3.5吨/吨,焦碳水分为10%,喷煤8.0吨/小时,料速为每小时8批料,炉温为0.70%,若料速不变,炉温降至0.50%,焦量不变,每小时应喷煤多少?综合负荷应为多少?
[单项选择]保健按摩师每天要()。
A. 带项链
B. 带耳环
C. 做手部卫生
D. 带足链
[判断题]数技-( )把所设置的课程及内容轻重合理地分配,叫课时分配。
A.正确
B.错误
[单项选择]不适用于局域网的拓扑结构是( )。
A. 星形拓扑
B. 网状形拓扑
C. 总线形拓扑
D. 环形拓扑