[多项选择]根据增值税法律制度规定，征收增值税的事项有( )。
A. 用于对外投资的自产工业产品
B. 农业生产者销售的自产农业产品
C. 用于单位集体福利的自产副食品
D. 直接用于教学的进口仪器

[简答题]某公司欲采购一批材料，目前正面对着A、B两家提供不同信用条件的卖方，A公司的信用条件为“3/10，n/40”，B公司的信用条件为“2/20，n/40”，请回答下面三个问题并说明理由。如果该公司准备放弃现金折扣，那么应选择哪家供应商；如果该公司准备享有现金折扣，那么应选择哪家供应商？

[多选题]因婚姻、职务变化等新形成任职回避关系的，本人应在（）内向所在单位报告，并在（）内完成任职回避调整。在任职回避调整到位前，必须严格实行业务回避。
A.30天
B.60天
C.90天
D.3个月
E.6个月
F.12个月

[单选题]遇运输调整需提前( )或推迟天窗时，经调度所值班主任批准后，列车调度员应提前2小时通知车站，车站通知施工、维修主体单位，主体单位通知配合单位。
A.超过40分钟
B.超过30分钟
C.超过15分钟
D.超过45分钟

[单选题]下列选项中不属于BIM钢结构深化设计软件的主要目的是()。
A.材料优化
B.降低成本
C.确保安全
D.构造优化

[判断题]对当事人的同一个违法行为,不得给予两次以上行政处罚。
A.正确
B.错误

[多选题]起钻时,钻柱进钻杆盒后,井架工待吊卡下放到合适位置,发信号通知司钻刹车,( ),左手轻推立柱进指梁,扶正吊卡朝大门方向,发出下放信号,目送游动滑车过指梁。
A.将兜绳松开
B.将吊卡活门打开
C.右手用力拉兜绳
D.右手用力拉钻杆。

[判断题]83.包裹在电缆外皮上的保护层称为电缆护层。
A.正确
B.错误

[单项选择]变压器的主要作用是（）变换。
A. 电流
B. 电压
C. 功率

[单选题]除获得定点资格的专科医疗机构和中医医疗机构外，参加医疗保险人员最多可以选择就医的定点医疗机构的数量是（ ）。
A.3家
B.4家
C.5家
D.6家

[单选题]（）用个人保安线代替接地线。
A.禁止
B.允许
C.可以
D.视情况可以
E.lue

[单项选择]光气及光气化工艺的重点监控单元是（）。
A. 光气储运单元
B. 光气计量
C. 光气生产单元
D. 光气检测单元

[单选题]氢化可的松的主要作用是（）。
A.降低血糖
B.减少嗜酸性粒细胞和淋巴细胞
C.减少体内水的排出
D.减少血小板和红细胞
E.激活儿茶酚胺氧位甲基转移酶

[单项选择]恶性肿瘤ⅢA期为（）
A. 低度恶性、间室内病变、无转移
B. 低度恶性、间室外病变、无转移
C. 高度恶性、间室外病变、无转移
D. 间室内病变伴有转移的恶性肿瘤
E. 间室外病变伴有转移的恶性肿瘤

[单选题]按规定施工作业车跟踪前行列车进入区间时，当施工作业车由两端站进入同一条线路时，待前行列车到达（ ），跟踪前行列车的施工作业车到达指定地点停车后，对方站待发的作业车才准进入封锁区间。
A.前方站
B.后方站
C.发车站
D.接车站

[单项选择]下列关于病毒性肝炎对妊娠的影响的叙述错误的是
A. 妊娠早期合并病毒性肝炎，可使妊娠反应加重
B. 如妊娠晚期合并病毒性肝炎，会增加妊高征的发病率
C. 使产后出血率增高
D. 妊娠早期合并病毒性肝炎，不会增加胎儿畸形的发生率
E. 使围生儿死亡率明显升高

[单项选择]女，23岁，3个月来四肢关节肿胀，尤以双手腕关节，掌指关节，近端指间关节肿痛明显。若诊断类风湿关节炎基本明确，下列哪一项表现不是类风湿关节炎的活动指标（）
A. X线关节破坏融合
B. CRP升高
C. 高滴度类风湿因子
D. 关节软组织肿胀或积液
E. ESR升高

[简答题]对公务员实行职位聘任须经哪一级公务员主管部门批准？

[单选题]有突出危险煤层的新建矿井必须先抽后建。矿井建设开工前,应当对首采区突出煤层进行地面钻井预抽瓦斯, 且预抽率应当达到()%以上。
A.30
B.40
C.50
D.60

[单项选择]主动舒张功能障碍原因是（）.
A. Ca²⁺及时被肌浆网摄取及泵出胞外
B. K⁺能及时被肌浆网回摄及泵出胞外
C. Ca²⁺不能及时被肌浆网回摄及泵出胞外
D. Na⁺不能及时被肌浆网回摄及泵出胞外
E. K⁺不能及时被肌浆网回摄及泵出胞外

[判断题]变压器内部音响很大,很不均匀,有爆裂声时，应该立刻停止变压器运行。
A.正确
B.错误

[判断题]（ ）起重机司机要严格执行企业的法律.法规，遵章守纪。
A.正确
B.错误

[单选题]In June 1956 a TWA Constellation collided with a United Air Lines DC-7 over the Grand Canyon in Arizona,killing all 128 people on both aircraft.At the time it was the worst ever airline disaster Struggling with outdated technology and a post-war boom in air travel overworked air-traffic controllers failed to spot that the planes were on a collision course.（1）With that system again struggling to keep pace with demand,Donald Trump thinks it is time to privatise Americas air-traffic control service.This week the president out-lined a plan to turn air-traffic control into a separate non-profit entity financed by user fees,instead of the present patchwork of taxes and grants.Shorn of its air-traffic responsibility,the FAA would become a satety body America's air-traffic system is vast,consising of 14,000 controllers working in 476 airport-control towers that handle take-offs and landings,as well as in 21"en route"centres looking after flights along the nation's airways.（2）This leads to delays and frustrated flyers.With passenger numbers set to grow from 800m a year to almost Ibn by 2026,the problem will only get worse（3）Many countries,including Australia,Britain and Canada,have privatised air-traffic services or turned them into state-owned firms.Nav Canada,a non-profit firm that has long managed Canadian airspace,has costs per flight hour of 340 compared with the FAA's$450.Replacing old radar-based methods with accurate satellite navigation and better digital communications is a particular priority.Aircraft using satellite navigation can be safely spaced more closely together,which permits many more planes to be in the air at the same time.Digital systems also provide data links to control centres and to other planes by regularly broadcasting an aircraft's identification sign,its position and course.（4）The president's proposal might even speed a move towards"virtual"control towers in low-rise buildings,which can replace towers physically localed at airports.The European Union reckons such innovations will allow three times as many flights to be handled in the region and save airlines some 9bn（$10bn）a year.It also,optimistically perhaps,predicts that on average aircraft will land with in one minute of their scheduled arrival time.That would count as a miraculous improvement for any one,let alone America's weary airport warriors（5）A similar plan got stuck last year,despite being backed by most airlines and the air-traffic controllers'union.At least the president can dodge the queues Air Force One flights get special clearance 2选？ A.In addition to providing air traffic services,the FAA also provides safety oversight for those services,which may create an inherent conflict of interest
A.It has a good safety record,but elderly technology limits the number of flights that can be haned
B.Many Democrats argue that changing the status quo is unnecessary given that flying in the United States is as safe as it's ever been
C.Mr Trump believes that,no longer mired in a federal bureaucracy the air-traffic service will become more efficient and better able to invest in technology
D.This would allow"free routing",which means pilots can fly diretly to a destination,rather than fllow established aiways,which often zigzag around.
E.Mr Tump.though,may struggle to get the proposal through Congress.
F.That crash led to the creation of a new body,which became the Federal Aviation Administration（FA
G.,in charge of running and modermising the world's biggest air-transport system.

[判断题]三相异步电动机的转子部分主要有转子铁芯和转子绕组构成。（ ）
A.正确
B.错误

[单选题]平台型企业，指立足公司的网络属性，以能源互联网为支撑，以公司品牌信誉为保障，汇聚各类资源，促进供需对接、要素重组、融通创新，打造能源配置平台、综合服务平台和新业务、新业态、新模式发展平台，使（ ）开发成为培育公司核心竞争优势的重要途径。
A.品牌价值
B.电网价值
C.平台价值
D.企业价值

[判断题]全域土地综合整治的目标任务是以科学合理规划为前提，以乡镇为基本实施单元，整体推进农用地整理、建设用地整理和乡村生态保护修复，优化生产、生活、生态空间格局，促进耕地保护和土地集约节约利用，改善农村人居环境，助推乡村全面振兴。
A.正确
B.错误

[单选题]根据钢轨伤损程度用油漆标上标记，重伤标记是(　　)。
A. △
B. △△
C. △△△

[单项选择]肺阴亏虚，虚火灼络的肺痨病的临床表现是（）
A. 左胸心前区憋闷作痛，时痛时止
B. 胸痛剧烈，面色青灰，手足青冷
C. 胸痛，壮热面赤，喘促鼻煽
D. 胸痛，颧赤盗汗，午后潮热，咳痰带血
E. 胸痛，壮热，咳吐脓血腥臭痰

[多选题]国家电网有限公司齐心协力抗击疫情的磅礴力量，展现了（ ）的电网铁军风貌。
A.特别负责任
B.特别能战斗
C.特别能吃苦
D.特别能奉献

[简答题]托运行李、残疾人车有何规定？

[多选题]TJ/CL 255A-2013文件要求：侧箱安装要求:侧箱安装于侧箱基础上，基础平面尺寸宜为( )（长×宽）；基础顶面距轨道板（或道床板）顶面的间隙不小于( )；基础侧面与轨道结构侧面不得接触。
A.1300mm×1100
B.1500mm×1100
C.10mm
D.100mm

[多选题]根据《配电安规》，使用远控电缆割刀开断电缆时，（ ），防止弧光和跨步电压伤人。
A.刀头应可靠接地
B.周边其他施工人员应临时撤离
C.远控操作人员应与刀头保持足够的安全距离
D.不宜设置专责监护人

[判断题]低温热水地板辐射采暖系统,防潮层敷设于填充层和绝热层之间,用以防止热水进入绝热层。
A.正确
B.错误

[判断题]2.38海关监管的机动车办理注册登记时，应与全国进口机动车计算机核查系统比对。
A.正确
B.错误

[单选题]**筑坝法,因经营费用较低,筑坝较为方便,在我国选矿厂多有采用,()适宜采用。
A.平地型尾矿库
B.山谷型尾矿库
C.傍山型尾矿库

[单选题]主要用于诱导麻醉和基础麻醉的药物是
A.氟烷
B.丁卡因
C.利多卡因
D.硫喷妥钠
E.氧化亚氮

[不定项选择题]共用题干 A Powerful Influence
There can be no doubt at all that the Internet has made a huge difference to our lives.Parents are worried that children spend too much time playing on the Internet,hardly______(1) doing anything else in their spare time.Naturally,parents are______(2)to find out why the Internet is so attractive,and they want to know if it can be______(3) to their children.Should parents worry if their children are spending that much time______(4) their computers?
Obviously,if children are bent over their computers for hours,______(5) in some game,in-stead of doing their homework,then something is wrong.Parents and children could decide how much use the child should______(6) of the Internet,and the child should give his or her______(7) that it won't interfere with homework.If the child is not______(8) to this arrangement,the parent can take more drastic______(9)dealing with a child's use of the Internet is not much dif-ferent from______(10) any other soft of bargain about behaviour.
Any parent who is______(11) alarmed about a child's behaviour should make an appointment to______(12)the matter with a teacher.Spending time in front of the screen does not ______(13)affect a child's performance at school.Even if a child is______(14)crazy about using the Internet, he or she is probably just______(15) through a phase,and in a few months there will be some-thing else to worry about! 1._________
A.always
B.rarely
C.never
D.ever

[单选题]“遇湿易燃物品”标志图形的符号为（ ）。
A.黑色或红色
B.白色或绿色
C.黑色或白色
D.红色或绿色