热门试题:
[多选题]65.拆卸联轴器禁止( ),避免击碎联轴器或造成电动机轴弯曲和端盖损坏
A.使用顶拔器
B.用手锤敲打
C.使用撬杠撬拨
D.使用专业工具
[单项选择]William Appleton, author of a recent book entitled Fathers and Daughters, believes that it is a woman’s relationship with her father (67) decides how successful she will be in her (68) life. According to Appleton there are three important steps a girl must (69) in her relationship with Daddy.
The (70) . is the "little girl" stage in which the daughter loves and idolizes (崇拜) her father (71) he were a god or hero without (72) . And her father loves his daughter (73) blindly, seeing her as an "oasis (绿洲) of smiles" in a hard, cold world. Then comes the second stage. It starts during adolescence and (74) for many years. Here, the little girl begins to rebel against Daddy and (75) his authority. He reacts with anger and (76) .A. late B. later
C. early D. earlier
[单项选择]主要功能与调节骨骼肌的张力有关的是
A. 旧小脑
B. 新小脑
C. 原小脑
D. 小脑中脚
E. 橄榄小脑纤维
[单项选择]对流行性出血热的早期诊断有帮助的是
A. 血尿素氮增高,二氧化碳结合率降低
B. 弥散性血管内凝血实验室检查阳性
C. 肝素类物质增加
D. 红细胞及血红蛋白升高明显
E. 外周血发现异型淋巴细胞,尿中出现大量蛋白
[简答题]安装、拆卸( )和( )、( ) 等自升式架设设施,应当编制拆装方案、制定安全施工措施,并由专业技术人员现场监督。
[单项选择]强调利率对货币需求影响作用的经济学者是( )
A. 费雪
B. 卡甘
C. 凯恩斯
D. 弗里德曼
[多选题]对于IV级钢筋,应采用预热闪光焊或闪光-预热闪光焊工艺进行焊接。当接头拉伸试验结果发生脆性断裂,或弯曲试验不能达到要求时,尚应在焊机上进行焊后热处理,热处理工艺方法如下()。P125
A.待接头冷却至常温,将电极钳口调至最大间距,重新夹紧
B.应采用最低的变压器级数,进行脉冲式通电加热:每次脉冲循环包括通电时间和间歇时间宜为3s
C.焊后热处理温度就应在750~850℃(桔红色)范围内选择,随后在环境温度下自然冷却
D.在预热闪光之前再增加闪光过程,使不平整的钢筋端面“闪”成较平整的
E.在预热闪光之后需要有停歇再进行增加闪光
[判断题]电流和磁场密不可分,磁场总是伴随着电流而存在,而电流永远被磁场所包围。
A.正确
B.错误
[填空题]
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A. I enjoy P.E. at school.
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B. I like basketball.
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C. What kind of movies do you like, then
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D. Because it’s exciting.
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E. Frequency. It’s an action movie and it’s interesting.
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F. Oh, I like comedies, too.
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G. Sorry. I don’t. I want to go to a movie. H: I don’t like watching movies.
Dave: What sports do you like
Rita: I like basketball.
Dave: Why do you like it
Rita: (56)
Dave: Do you want to play it now
Rita: (57)
Dave: What movie
Rita: (58)
Dave: But I don’t think so. Action movies are usually boring and scary.
Rita: (59)
Dave: I like comedies.
Rita: (60)
60()
[判断题] 网络教育服务属于增值税生活服务。( )
A.正确
B.错误
[判断题]胸外心脏按压时,按压与人工呼吸的比例关系通常是,成人为30:2,婴儿、儿童为15:2。
A.正确
B.错误
[单选题]下列符号中表示强制国家标准的是()。
A.GB/T
B.GB/Z
C.GB
[单项选择]Many people have difficulty in studying mathematics. Sometimes their difficulty stems from the psychological idea that they are "not good at math". (39) It has been demonstrated that many times that it is often this idea that is causing their problems rather than any lack of skill in mathematics. The best way to deal with this problem is to tell yourself that math involves using the same numbers you have been using all your life and that you know them as well as anyone else. Then set your mind to learning how they are used in the particular part of mathematics you are studying. Many schools offer "math anxiety" courses which are designed to help people overcome their fear of math.
Another problem many people encounter is that in mathematics, unlike some other subjects you may have studied, the material has a very important sequence or order. If you do not understand a section of mathematics text, it is no use going on to the next section. Many sections of math books are bas
A. it is no use going on to other subjects
B. it is no use going on to the next section
C. you can not go on studying physics
D. you can go on studying chemistry
[多项选择]法定禁止背书的情形有( )。
A. 被拒绝付款的汇票
B. 被拒绝承兑的汇票
C. 记载“委托收款”字样的汇票
D. 超过付款提示期限的汇票
[多选题]开关柜空气绝缘净距离要求中,带电体至门空气绝缘净距离应满足(____)。
A.7.2kV ≥130
B.12kV ≥155
C.24kV ≥210
D.40.5 kV ≥330
[单选题]‐患者3年来经常心悸,气短。检查:心尖搏动稍向左下移位,心浊音界稍向左下扩大,心尖部听诊可闻及3/6级以上粗糙的收缩期吹风样杂音及舒张期隆隆样杂音。应首先考虑的是
A.单纯二尖瓣狭窄
B.单纯二尖瓣关闭不全
C.二尖瓣狭窄及二尖瓣关闭不全
D.主动脉瓣狭窄
E.主动脉瓣关闭不全
[判断题]卧式射水姿势省力,便于隐蔽,防止爆炸伤人,缺点是水枪移动不灵活。( )(中)
A.正确
B.错误
[单选题]韶山3B型电力机车砂箱装置由砂箱、砂箱盖、支架和( )组成。
A.排障器
B.排石器
C.轴箱
D.减振器
[单项选择]不均匀的基础变形会使混凝土板与基层脱空,在车轮荷载作用下板产生过大的()而遭破坏。
A. 压应力
B. 剪应力
C. 附加力
D. 弯拉应力
[单选题]石油馏分是指原油蒸馏时分离出的具有一定馏程的组分,其中馏程指的是( )。
A. 沸点范围
B.压力范围
C. 密度范围
D. 闪点范围
[判断题]正确选择仪表的量限是减少测量误差的基本方法( )
A.正确
B.错误
[单选题]为提升金融分期及支付能力,权益平台要进一步提升()、(),提供(),降低用户业务办理门槛。
A.聚合支付,分期支付能力,多种支付手段
B.聚合支付,分期支付能力,多种分期方式
C.聚合支付,金融分期能力,多种分期方式
D.聚合支付,金融分期能力,多种支付手段
[单选题]患者男,58岁。因急性心肌梗死行溶栓治疗,下列病情观察最重要的是
A.观察患者的排便形态
B.观察患者的尿量
C.观察患者有无呼吸抑制
D.观察患者有无出血倾向
E.观察患者24小时的出入量
[判断题]《铁路运输收入票据管理工作规则》客运票据发生填写错误或代用票剪断线与填写金额不符时,不得涂改,一律按作废票处理。
A.正确
B.错误
[判断题]发现作业人员存在违章或危及设备安全行为时,运维人员应要求其立即停止作业,并向上级报告。
A.正确
B.错误
[单项选择]关于单纯性甲状腺肿的实验室检查,下列哪项是错误的
A. T3、T4正常,TSH正常
B. T3正常、T4偏低,TSH偏高
C. T3、T4正常,TSH增高
D. 摄I131率增高,但高峰不提前
E. T3抑制试验可达50%以上
[单选题]张先生是一家企业的经理,创业初期,公司里只有12个员工,每个人都由张先生直接管理。随着规模的扩大,张先生聘请了一位副经理,由他处理公司的具体管理事物,自己专业于企业的战略经营,有什么事情都有副经理向其汇报。则公司的沟通网络 ( ) 。
A.由轮型变成了Y型
B.由Y型变成了轮型
C. 由轮型变成了链型
D.由链型变成了星型
[判断题]A-E-O-001 5 1 4
涂油或更换扣件时应用钢丝刷去掉扣件、螺杆上的污渍和铁锈,放在轨枕面上,并清扫混凝土轨枕承台面上的污物。
A.正确
B.错误
[单选题]当电路发生短路或过负荷时,()能自动切断故障电路,从而使电器设备得到保护。
A.高压断路器
B.隔离开关
C.电压互感器
D.熔断器
[判断题]CRH380A统型动车组采用双包折棚风挡。( )
A.正确
B.错误
[单选题]对于参数估计的正确结论是( )
A. 样本含量大,置信区间长度也大
B. 一个参数可得到几个估计量
C. 区间估计与点估计相同
D. 样本含量小,参数估计更可靠
[单选题]40米以下云梯消防车臂架动作时间不超过( )秒。
A.120
B.130
C.140
D.150
[判断题]作业负责人允许变更一次,并经签发人同意。()
A.正确
B.错误
[单选题]( )不是制动拖滞的原因。
A.制动踏板轴卡滞
B.两轮制动间隙不一致
C.制动阀排气阀间隙过小或排气阀门橡胶老化、变形而堵塞排气口
D.制动蹄回位弹簧折断或弹力不够
[单项选择]防排烟系统通过( )强制送入新鲜空气。
A. 通风管道
B. 排烟风机
C. 通风管道
D. 正压风机
[单选题]自动间隙调整器应作用良好,并清扫给油,调整螺丝须留有( )扣以上的调整量。
A.1/4
B.1/3
C.1/2
D.2/3
[多选题]夜间或浓烟等能见度较低环境下行动时应避开( )、高空无护栏外墙边沿等危险区域,防止踏空或重心不稳导致坠落伤亡。
A.电梯井
B.回型楼梯
C.沼池
D.孔洞