热门试题:
[单项选择]在下列四个选项中,不属于基本关系运算的是
A. 连接
B. 投影
C. 选择
D. 排序
[判断题]因公民自伤、自残等故意行为致使损害发生的,国家不承担赔偿责任。( )
A.正确
B.错误
[单选题]应急通信B类设备是用于现场指挥通信的应急通信设备,提供图像( )、静图、数据、多路语音、内部通信等业务。
A.镜像
B.图片
C.动图
D.扫描图像
[单选题]在电子移交的( )阶段,提供管制的单位在航空器飞越管制区边界前向接收单位移交管制责任。
A.通知
B.对话
C.协调
D.管制移交
[判断题]因抢修需要向封锁区间开行路用列车,如一端站开行两列及以上路用列车时,第一列路用列车在到达指定地点停车并按规定设置防护后,抢修负责人方可通知驻站联络人员转告车站值班员开行同方向第二列路用列车进入封锁区间。
A.正确
B.错误
[单选题]试验过程中更改接线以及(),应首先断开电源,再进行充分放电、接地后,方可检查接线或再拆除检测接线,防止人身触电
A.试验结束后
B.试验结束前
C.试验结束中
D.实验
[单选题]库式呼吸表现为
A.吸气呼吸困难
B.呼气呼吸困难
C.间断呼吸
D.呼吸深大而规则
E.呼吸浅表而不规则
[单项选择]Most people who travel long distances complain of jet lag. Jet lag makes business travelers less productive and more prone (1) mistakes. It is actually caused by (2) of your "body clock"—a small cluster of brain cells that controls the timing of biological (3) . The body clock is designed for a (4) rhythm of daylight and darkness, so that it is thrown out of balance when it (5) daylight and darkness at the "wrong" times in a new time zone. The (6) of jet lag often persist for days (7) the internal body clock slowly adjusts to the new time zone.
Now a new anti-jet-lag system that is based on proven (8) pioneering scientific research is (9) . Dr. Martin Moore-Ede has (10) a practical strategy to adjust the body clock much sooner to the new time zone (11) controlled exposure to bright light. The time zone shift is easy to accomplish and eliminates (12) of the discomfort of je
A. to make
B. of making
C. to making
D. for making
[不定项选择题]共用题干
Aromatherapy(芳香疗法)
1 Aromatherapy is a form of alternative medicine which is based on the use of very concentrated"es-sential"oils from the flowers,leaves,bark,branches or roots of plants which are considered to have healing properties.In aromatherapy these powerful oils are mixed with other oils , such as almond(杏仁)oil, or they are diluted(稀释)with water.These solutions(溶液剂)can be rubbed on the skin,sprayed in the air, or applied as a compress(敷药).
2 Many people have aromatherapy massages(按摩),and depending on the treatment a person is having, the aromatherapist will massage the oil into the hands or shoulders.The massage is smooth and flowing,as it is designed to create a sense of relaxation and calm.The sessions are tailored to the individual's health and mood at the time,so every session is unique.
3 Practitioners of aromatherapy believe that the aroma of the"essential"oils directly stimulates the brain or that the oils are absorbed through the skin into the bloodstream,where they can affect the whole body and promote healing.Other claims in support of aromatherapy are that it aids digestion,improves the functioning of respiratory system,reduces muscular aches and pains,and promotes muscle relaxation and tone.It has also been argued that aromatherapy can improve circulation,lower blood pressure,and help combat insomnia(失眠)and other stress-related disorders such as tension headaches , anxiety , and mild depression.
4 However,while aromatherapy may have real effects that promote a sense of well-being,some tradi- tional medicine practitioners remain doubtful about its powers.While research has confirmed that aroma-therapy does have some positive short-term effects on most people,it also suggests that aromatherapy is not an actual science or medicine that should be used to treat illness.Furthermore,not all aromatherapy is considered beneficial to health.There are precautions which should be taken before having aromatherapy because some oils can have negative effects on people with certain medical conditions.The study of aroma-therapy is relatively new and unexplored.More research needs to be conducted to make scientific conclusions about its use and effects.
The use and benefits of aromatherapy need to______.
A.have healing effects
B.be used externally
C.be promoted
D.help the disabled
E.be further explored
F.suit different people
[单选题]发生重大事故隐患,应当采取的措施()。
A.全部或者局部停产停业
B.边整改边生产
C.发现事故隐患后即可生产
D.可以在不影响调查的情况下继续生产
[单项选择]铁路局所属各部门、单位制订的技术文件都必须符合()的规定。
A. 铁道部
B. 铁路局
C. 《铁路法》
D. 《铁路技术管理规程》
[多选题](第十二条)(穿着个人防护装备参与执勤训练时,不得随身携带以下与执勤训练无关的物品( )。( )
A.坚硬物品
B.锋锐物品
C.软质胸标
D.亲友照片
[多选题]对单独执行任务的人员,其上级领导、机关应当根据任务性质、时限和所处环境,( ),并掌握人员思想和工作情况,及时给予帮助、指导和解决实际问题。
A.教育指导
B.明确责任
C.提出要求
D.交代注意事项
[单项选择]国有企业改革的根本方向和途径是( )。
A. 转换企业经营机制
B. 使企业成为自主经营、自负盈亏的经济实体
C. 建立现代企业制度
D. 扩大并落实企业经营自主权
[单项选择]传统以太网中,连接在集线器中的一个结点发送数据,它用( )方式将数据传送到HUB的其他端口。
A. 单播
B. 广播
C. 组播
D. 并发
[判断题]科研活动能够提供认识社会和改变社会的“物质手段”和“思想方法”。( )
A.正确
B.错误
[判断题]响墩、火炬从生产日期算起,有效期均为2年。对过期的响墩、火炬经使用外观检查、抽样试验良好( )
A.正确
B.错误
[单项选择]汞中毒驱汞治疗的首选药物是
A. 谷胱甘肽
B. 半胱氨酸
C. 二巯基丁二酸钠
D. 维生素E
E. 维生素C
[单选题]休克诊断指标中不包括( )。
A.脉率<80次/分
B.收缩压<70mmHg
C.尿量<30mL/h
D.神志淡漠或烦躁
E.皮肤苍白、湿冷
[单选题]若将二极管正极与电源负极相连,二极管负极与电源正极相连,二极管处于( )。
A.截止状态
B.导通状态
C.关闭状态
D. 以上答案都不对
[多选题]火情侦察的方法( )。(易)3
A.外部侦察
B.内部侦察
C.询问知情人
D.仪器检测
E.人工手段辅助侦察
[判断题]若某配合的配合公差为25um,最大间隙为15um,则该配合一定是过渡配合。()
A.正确
B.错误
[单选题]负责审查检验合格的制剂的全过程记录并决定是否发放使用的是
A.药剂科主任
B.医院药事会主任
C.主管药学工作的副院长
D.质量管理组织负责人
[单项选择]治乳痈最佳的药物是
A. 白头翁
B. 蒲公英
C. 败酱草
D. 土茯苓
E. 鱼腥草
[多选题]促成1922年7月中共二大提出民主革命纲领的主客观因素有( )。
A.国内外时局的新变化
B.列宁与共产国际的指导和帮助
C.党开展了同“左”、右倾机会主义的斗争
D.党开始懂得马克思主义要与中国实际相结合
[单选题] 企业最直接的竞争者是那些( )的公司。
A.对不同目标市场推行不同战略
B.对不同目标市场推行相同战略
C.对相同目标市场推行相同战略
D.对相同目标市场推行不同战略
[单项选择]铜母合金(符合HS注释规定) ( )
A. 16
B. 17
C. 18
D. 19
[单项选择]某工程为10层钢筋混凝上框架结构,某施工企业现场项目部在自购钢筋进场之前,按要求向监理工程师提供了合格证,并经过见证取样,经过复验结果合格。监理工程师同意该批钢筋进场使用。主体钢筋接头采用绑扎、电渣压力焊两种,在隐蔽工程验收钢筋焊接质量时,怀疑钢筋母材不合格。经过对该批钢筋重新检验,最终确认该批钢筋不合格。监理工程师随即发出不合格项目通知,要求施工单位拆除重做,同时报告业主。
钢筋加工时,钢筋的接头宜设置在受力较小处。同一纵向受力钢筋不宜设置两个或两个以上接头。接头末端至钢筋弯起点的距离不应小于钢筋直径的( )倍。
A. 7
B. 8
C. 6
D. 10
[多选题]架设及拆除防护网及承载索必须在晴好天气进行,所有绳索应保持干净、干燥状态,施工前应对( )进行绝缘性能测试,不合格者不得使用。
A.A.承载索
B.B.拖网绳
C.C.绝缘网
D.D.导引绳
[判断题]减小转向架的重量及转动惯量是提高蛇形临界速度的一项措施。
[单项选择]慢性心力衰竭的最常见的发病诱因是()
A. 呼吸道感染
B. 心房颤动
C. 输液过多、过快
D. 药物使用不当
E. 情绪激动
[判断题]超限运输车辆通行证由各省或地市相关部门核发,如有疑问可以联系12122查询。 ( )
A.正确
B.错误
[单选题]润滑油的黏度与其他液体的黏度一样也是随压力的增高而( )。
A.变化
B.减小
C.不变
D.加大