热门试题:
[单选题]在主节点处固定横向水平杆、纵向水平杆、剪刀撑、横向斜撑等用的直角扣件、旋转扣 件的中心点的相互距离不应大于()mm;
A.100
B.150
C.200
D.250
[单选题]工业 4.0 是以智能制造为主导的工业化阶段。这一概念最早是由( )提出的。
A.美国
B.德国
C.日本
D.中国
[单项选择]“哪里有消费者的需要,哪里就有我们的机会”,是属于()。
A. 产品观念
B. 推销观念
C. 市场营销观念
D. 社会营销观念
[单项选择]金属燃烧属于_。
A. 扩散燃烧
B. 蒸发燃烧
C. 分解燃烧
D. 表面燃烧
[判断题]“稳活盈”产品向客户出具本金及利息的记账凭证,还可向客户提供“单位定期存款开户证实书”。
A.正确
B.错误
[单项选择]社会主义市场经济与资本主义市场经济的根本区别是( )。
A. 存在公有制经济成分
B. 计划经济
C. 宏观调控
D. 占主体地位的公有制经济成分
[单项选择]慢性肾功能衰竭,明显高磷血症(血磷大于2.26mmol/L)或钙磷乘积大于65mg/dl者,可加用()
A. 碳酸钙
B. 氢氧化铝制剂
C. ACEI/ARB
D. 钙拮抗剂
E. 骨化三醇
[判断题]断路器可分为框架式和塑料外壳式。
A.正确
B.错误
[单选题]设备舱通风口及裙板滤网等检修作业项目中空调温度设定要求:车辆正常运行时全列空调温度设为集控制冷模式,设定温度为(___);其他运用时间根据运用情况设定室内温度。
A.26℃
B.24℃
C.28℃
D.20℃
[判断题]污秽的电导率越高,污秽的电导率越高,污染程度越严重,闪络电压越低。
A.正确
B.错误
[单选题]关于青霉素类描述的哪项是正确的
A.青霉素类的抗菌谱相同
B.各种青霉素均可口服
C.广谱青霉素完全可以取代青霉素
D.青霉素只对繁殖期细菌有杀灭作用
E.青霉素对繁殖期和静止期具有杀菌作用
[多选题]扑救娱乐场所火灾,辖区中队作为第一出动,战斗编成通常以( )为主要组成。(中)
A.水罐消防车
B.举高消防车
C.抢险救援消防车
D.泡沫消防车
[单项选择]在工程网络计划中,如果某项工作的最早开始时间和最早完成时间分别为第3天和第8天,则说明该工作实际上最早应从开工后()。
A. 第3天上班时刻开始,第8天下班时刻完成
B. 第3天上班时刻开始,第9天下班时刻完成
C. 第4天上班时刻开始,第8天下班时刻完成
D. 第4天上班时刻开始,第9天下班时刻完成
[多项选择]工程建设其他费用由()组成。
A. 设备工器具的置费
B. 办公及生活家具购置费
C. 预备费
D. 建设单位现场管理费
E. 土地使用费用
[单项选择]受孕初期仍按月有少量月经而无损于胎儿的称:()
A. 季经
B. 居经
C. 漏胎
D. 垢胎
E. 避年
[单项选择]活塞由上止点运动到下止点所扫过的容积是指()。
A. 燃烧室容积
B. 气缸工作容积
C. 气缸总容积
D. 气缸最大容积
[判断题]多媒体计算机是指计算机系统中用于存放文件的设备有多种,比如软盘、硬盘、光盘等。( )
[单项选择]肝肠循环可影响()
A. 药物的与血浆蛋白结合
B. 药物起效的快慢
C. 药物作用的时间长短
D. 药物的代谢
E. 药物的排泄
[多选题]并网发电厂检修管理中,由于电厂自身原因出现( )情况,按 10 分/次考核。
A.计划检修工作不能按期完工,且未办理延期手续
B.设备检修期间,办理延期申请超过一次
C.擅自增加工作内容而未办理申请手续的
D.机组非计划停运消缺时间超过 48 小时,没有提交临修申请的
[单项选择]在工程网络计划中,工作的总时差是指在不影响( )的前提下,该工作可以利用的机动时间。
A. 紧后工作最早开始
B. 后续工作最早开始
C. 紧后工作最迟开始
D. 紧后工作最早完成
[多选题]对相间连杆采用(____)方式设计的三相机械联动隔离开关,应在从动相同时安装分/合闸指示器。
A.转动
B.链条传动
C.隔离开关
D.接地开关
[单选题]使用风力除雪机等影响( )的机具进行除雪作业时,现场必须执行一机一人防护制度。
A.视觉
B.听觉
C.视听
[简答题]你是省政府的工作人员,现在领导要你对家电下乡这个政策进行一次调研活动,你怎么做准备工作?
[判断题]李某伪造了面额5000元的国库券,其行为构成伪造有价票证罪。
A.正确
B.错误
[判断题]窗口高宽比较小时,火焰(或热气流)贴附外墙面的现象明显,使火势很容易向上方蔓延发展。
A.正确
B.错误
[多选题]以下能开具ETC通行费电子发票的途经有( )。
A.票根APP
B.票根小程序
C.票根官网(https://www.txffp.com/)
D.ETC自营网点
[单选题]春季常见的传染病有( )。
A.流感、麻疹、腮腺炎、猩红热、流脑
B.流感、水痘、麻疹、腮腺炎、猩红热、流脑
C.流感、水痘、麻疹、腮腺炎、流脑
[多项选择]辉煌版2005采用业务流程控制,现金费用单分三级控制,第一级是制单人,第二级是出纳,第三级是部门经理或项目经理,则采用该审核级数后,下列描述正确的是()。
A. 这张现金费用单录入后,只能存为草稿,不能过账
B. 部门经理、项目经理、出纳均可调出这张草稿签字审核,但在各级审核完成前,也只能将单据存为草稿
C. 部门经理和项目经理都处于第二级,所以只须其中一人对这张单进行审核即可
D. 除第一级(录单)外,各级之间没有先后、主次关系,可以是第二级先审核,也可以是第三级先审核
[单选题]胸外心脏按压时,胸外心脏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
C.略
D.略
E.略
F.略
[单项选择]He was ordered away upon a long ______ to the ice-covered south, to make war upon the natives there and rob them of their furs.
A. excursion
B. expedition
C. tour
D. voyage
[不定项选择题]共用题干
Weight on and off the Earth We are so used to.our life on the surface of the earth that it can be quite an effort for our mind to break free of all the ideas that we take for granted.Because we can feel that things are heavy,we think of "weight"as being a fixed quality in an object,but it is not really fixed at all.If you could take a one-pound packet of butter 4,000 miles out from the earth,it would weigh only a quarter of a pound. Why would things weigh only a quarter as much as they do at the surface of the earth if we took them 4,000 miles out into space?The reason is this:all objects have a natural attraction for all other objects;this is called gravitational attraction.But this power of attraction between two obects gets weaker as they get farther apart.When the butter was at the surface of the earth,it was 4,000 miles from the center.When we took the butter 4,000 miles out,it was 8,000 miles from the center,which is twice the distance.If you double the distance between two objects,their gravitational attraction decreases two times two.If you treble the distance, it gets nine times weaker(three times three)and so on. So this is one of the first things we need to remember that the weight of an object in space is not the same as its weight on the surface of the earth. What about the weight of our pound of butter on the surface of the moon?At the distance the puii of the earth is about 4,000 times smaller than it is here on the surface,so we can forget all about the earth-pull on our butter. On the other hand,on the moon there will be an attraction between the butter and the moon,but the butter will weigh only about one-sixth as much as it does on the earth.This is because the moon is so much smaller than the earth.The amount of gravitational pull that a body produces depends on the amount of material in it.A packet of butter has a gravitational pull of its own;but this is very small in relation to the pull of something as large as the moon,or the earth,or the sun.
According to the passage,"weight"should be understood in the sense that
A.it is fixed if it is outside the earth's gravitational puli
B.it decreases four times when it is 4,000 miles from the earth's center
C.it varies with the change of the gravitational attraction between two objects
D.things increase in amount as they are closer to the earth's surface