题目详情
题目详情:

[单项选择]出现Austin-Flint杂音的原因是()
A. 主动脉瓣相对狭窄
B. 主动脉瓣相对关闭不全
C. 二尖瓣相对狭窄
D. 二尖瓣相对关闭不全
E. 肺动脉瓣相对狭窄

热门试题:

[判断题]所示的金具都是直线悬垂金具。
A.正确
B.错误
[单选题]当临时高处行走区域不能装设防护栏杆时,应设置( ) mm高的安全水平扶绳,且每隔( ) m设一个固定支撑点。
A.1050;2
B.1050;3
C.1150;2
D.1150;3
[单项选择]下列项目中,并不引起资产发生增减变化的项目是( )。
A. 接受捐赠
B. 减少实收资本
C. 投资者投入资本
D. 用资本公积转增资本
[单选题]汽轮机汽封按结构分为( )、碳精式密封和水封式密封三种。
A. 机械式密封
B. 填料式密封
C. 曲径式密封
D. 干气式密封
[多选题]下列( )属于清分中心的职责。
A. 负责ACC系统软件及硬件的维护、管理工作
B. 负责昆明地铁运营有限公司所管辖的线路LCC系统的软件和硬件维护、管理工作
C. 负责车站各终端软件的维护、管理工作
D. 负责票务部办公电脑维护工作
[多选题]轴瓦是滑动轴承中直接与轴颈相接触的重要零件,它的结构形式和性能将直接影响轴承的( )。
A.寿命
B.大小
C.效率
D.承载能力
[单项选择]Which pen is he going to buy
A. The cheaper one.
B. The expensive one.
C. The best (最好的) one.
[判断题]结合梁应注意混凝土与钢梁联结部位和共同作用是否良好。( )
A.正确
B.错误
[单项选择]汤某女,36岁,素抑郁多忧,情志不舒,两天前生气后出现胃脘胀痛,攻撑连胁,嗳气则舒。疼痛每因情志因素而增减,苔薄白,脉弦。(假设信息)如果病人兼见呕吐吞酸,则可选()
A. 小半夏汤
B. 左金丸
C. 四逆散合半夏厚朴汤
D. 大柴胡汤
E. 吴茱萸汤患者
[单选题]容量电费是()电费的组成部分。( )
A.非工业
B.普通工业
C.大工业
D.非居民
[多选题]空气压缩机必须设置有( )和动力机械上的各种仪表,在阀、表等齐全工作可靠的情况下,方准起动使用。
A.安全阀
B.气压表
C.动力离合器
D.压力调节器
[单选题]监理单位合同价格包括受托方为完成合同约定的监理服务范围和内容,由受托方承担的直接费、间接费、( )、税金等全部费用和要求获得的利润。
A.A.其他费用
B.B.基本预备费
C.C.建设期贷款利息
D.D.暂估价
[多项选择]当电动机发生下列情况之一,应立即断开电源。()
A. 发生人身事故时。
B. 所带设备损坏到危险程度时。
C. 电动机出现绝缘烧焦气味,冒烟火等。
D. 出现强烈振动。
E. 确认单相运行。
[单项选择]对于白箱(盒)测试用例的各设计准则,下列叙述中正确的是______。
A. 分支覆盖准则比语句覆盖准则严密
B. 条件覆盖要比分支覆盖优越,因此,条件覆盖能完全满足分支覆盖
C. 组合条件覆盖准则既能满足分支覆盖准则,也能满足条件覆盖准则。因此,组合条件覆盖准则是一种完全测试
D. 上述说法都不对
[多选题]建设项目需要配套建设的安全生产设施,必须与主体工程( )。
A.同时设计
B.同时施工
C.同时投产使用
D.同时报废
E.同时竣工
[单选题]《国家电网公司安全工作规定》第七十八条规定:事故调查应坚持( )的原则,及时、准确地查清事故经过、原因和损失,明确事故性质,认定事故责任,总结事故教训,提出整改措施,并对事故责任者提出处理意见,严格执行“四不放过”。
A.实事求是、尊重科学
B.安全第一、预防为主
C.尊重事实、教育为主
D.吸取教训、依法严处
[单选题]钢结构桥不得采用( )支座。
A.板式
B.橡胶
C.摇轴
D.辊轴
[单项选择]库肯勃氏瘤的临床与超声表现,下列哪一项是错误的 ( )
A. 原发于胃肠道的临床转移肿瘤
B. 多伴有腹水
C. 双侧卵巢受侵犯
D. 原发于临床恶性肿瘤
E. 肿瘤为实质性
[单选题]电容器安装时,每台电容器之间的距离不应小于(____)mm。
A. 25
B. 50
C. 75
D. 100
[单项选择]In Amsterdam (阿姆斯特丹) , there is an unusual Children Restaurant. It is run (经营) by children. From the manager to the cooks, waiters and other members are all children from six to twelve years old. They themselves do all the necessary work such as cooking and cleaning. These children are selected (挑选) in Amsterdam. After training (培训), they may work in the Restaurant for four weeks. All of them like their work.
This restaurant was founded (创办) in 1983 by a woman cook, who wanted to give the children chances to learn to be useful to the public. And now she is the only adult (大人) there, but her job is just to take care of the children.
The Restaurant is welcomed almost by everyone. Since there are only 20 seats in the Restaurant, it is always full of people.
If you want to have a meal in the restaurant, you must tell them ahead of time (提前). The cost of a meal is different according to different people. Usually four dollars for each adult, but much cheaper for the chil
A. Make a reservation.
B. Telephone them.
C. Just go there.
[单选题]Riboflavin是下列哪个维生素的英文名
A.维生素B2
B.维生素B1
C.维生素B12
D.维生素B6
E.维生素B8
[单选题]女性,56岁,身高155cm,体重55kg,体检发现空腹血糖6.4mmol/L,下列正确的是( )
A.可诊断糖尿病
B.应进行口服葡萄糖耐量试验
C.可排除糖尿病
D.应进行100g口服葡萄糖耐量试验
E.应做24小时尿糖定量
[判断题]超声波从水中入射到钢内,那么钢中的横波折射角小于纵波折射角。
A.正确
B.错误
[单选题]《中国铁路运输收入管理规定》(铁财[2020]75号)规定一般事故指损失金额不足()万元。
A.1
B.10
C.50
D.100
[判断题] 冷藏车厢内,药品与厢内前板距离不小于5厘米,与后板、侧板、底板间距不小于10厘米,药品码放高度不得超过制冷机组出风口下沿,确保气流正常循环和温度均匀分布。( )
A.正确
B.错误
[判断题]建筑施工企业应当定期对兼职安全巡查员进行安全教育培训
A.正确
B.错误
[单项选择]以下哪个不是创建工作分解结构过程的输出?()
A. 项目范围说明书
B. 工作分解结构
C. 工作分解结构词典
D. 范围基准
[简答题]请演示肱二头肌反射的检查方法。(卧位或坐位检查任选一种)。
[单项选择]

"$ 160 for a parking ticket! I’m calling city hall about this. There must be some mistake." Nick thought (36) . "Yes, sir, there is a mistake," said the man at the city hall," (37) I’m afraid the mistake’s (38) . This ticket was for $20. However, the fine doubles every 30 days. It has been 90 days, so the (39) is now $160. You will have to pay that." Nick had the $20 and he (40) to pay the fine. But for some reason the ticket had gotten (41) in his pile of papers and unopened letters.
Nick had always been a (42) person. In the past six months, he had (43) to pay his electricity bill, (44) his jacket at the cleaner’s too (45) and had to pay for the "storage". A job application form he had filled out was never (46) because it, too, was in one of his piles. "Get organized, man," his brother advised. "Plan what you A. fairer
B. easier
C. better
D. happier

[单项选择]

The normal human daily cycle of activity is of some 7-8 hours’ sleep alternation with some 16-17 hours’ wakefulness and that the sleep normally coincides (31) the hours of darkness. Our present concern is with how easily and to what extent this (32) can be modified.
The question is no (33) academic one. The ease with (34) people can change from working in the day to working at night is a (35) of growing importance in industry where automation (36) round-the-clock working of machines. It normally (37) from five days to one week for a person to adapt to a (38) routine of sleep and wakefulness, (39) during the day and working at night. (40) , it is often the case in industry (41) shifts are changed every week. This means that no sooner has he got used to one routine (42) he has to change to another, (43) much of his time is spent neither working nor sleeping very (44) A. problem
B. difficulty
C. trouble
D. matter

[单选题]飞行过程,ND 出现“WXRFAIL”,说明:
A.气象雷达失效
B.气象雷达姿态不在正常位
C.ND 显示故障无法提供气象显示
D.气象雷达校准故障
[单选题]《铁路旅客运输办理细则》规定,行李、包裹事故经过调查能够确认是( )需要承担责任范围的,不论责任单位是否确定,均应先行办理赔偿。
A.发货人
B.收货人
C.站段
D.铁路运输企业
[判断题]正当防卫中的不法侵害已经开始,是指已经为实施不法侵害行为准备工具、制造条件。 ( )
A.正确
B.错误
[单选题]( )主要作用是防止转向架以较高的频率点头振动。
A.一系垂向油压减振器
B.二系垂向油压减振器
C.一系横向油压减振器
D.二系横向油压减振器

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