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[单项选择]通过筛选或克隆形式从原代培养物或细胞系中获得具有特殊性质或标志的细胞群体称为()。
A. cell line
B. cell strain
C. cell library
D. others

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[不定项选择题]患者男,65岁,以"消瘦伴乏力一年"来诊,追问病史,3个月前发现腰椎及肋骨多发骨折,尿常规示:蛋白(+),红细胞10个/HP,血常规示血红蛋白75g/L,肾功能:血肌酐192μmol/L,血尿素氮10.09mmol/L,血钙3.25mmol/L,血白球比倒置,ALP正常。 根据以上临床资料,最可能的诊断是
A.淋巴瘤
B.多发性骨髓瘤
C.骨结核
D.狼疮性肾炎
E.白血病
F.血管炎肾损害
G.肝硬化
H.骨转移瘤
[判断题]经出站检查符合要求的营运客车和驾驶员,汽车客运站出站检查人员应当在“出站登记表”上进行记录,并经受检营运客车驾驶员签字确认。“出站登记表”保存期限不少于3个月。
A.正确
B.错误
[单选题]关于N型半导体的下列说法,错误的是( )。
A. 自由电子是多数载流子
B. 在二极管中由N型半导体引出的线是二极管的阴极
C. 在纯净的硅晶体中加入三价元素硼,可形成N型半导体
D. 在PNP型晶体管中,基区是N型半导体
[单选题]BE024.砂岩油田油井堵水选井时,要优先选择油层纵向渗透率级差大于( )的油井。
A.1
B.1.5
C.2
D.5
[填空题]网络设计的出发点是()。
[单项选择]下列各穴,属于手厥阴心包经的腧穴是:()
A. 少商
B. 少泽
C. 少冲
D. 少府
E. 中冲
[单选题]下列有关行政机关委托的组织的说法错误的是( )。
A.在行政许可中,行政机关在其法定职权范围内,依照规定,可以委托其他行政机关或者事业组织实施行政许可
B.能够接受行政委托,依法行使行政处罚的组织必须是依法成立的管理公共事务的事业组织
C.受委托的组织不具有行政诉讼被告或者行政复议被申请人的资格
D.受委托的组织不能以自己的名义实施行政行为
[单项选择]急性心理应激反应症状可能和哪种疾病混淆()
A. 甲亢
B. 糖尿病
C. 肺结核
D. 胃溃疡
E. 冠心病
[单项选择]

Charlie Bucket was a small boy in a very poor family. (61) once a year, on his birthday, did Charlie ever get to (62) a bit of chocolate. The whole family saved (63) their money for that special (64) , and when the great day arrived, Charlie was always presented (65) one small chocolate bar to eat all (66) himself.
And each time he received it (67) those marvelous birthday mornings, he would place it (68) in a small wooden box that he owned, and (69) it as thought it were a bar of (70) gold; and for the next few days, he would (71) himself only to look at it, (72) never to touch it. Then at last, (73) he could stand it no longer, he would strip a (74) bit of the paper wrapping(包装材料) at one corner to (75) a tiny bit of chocolate, and (76) he would take at tiny amount of it-just (77) to allow the lovely sweet taste to spread out slowly over his (78)
A. in
B. by
C. on
D. for

[填空题]数据信息可以有数字量、模拟量和开关量三种类型。数字量是以二进制形式提供的信息,通常是8位或16位数据;开关量是用二个状态表示的量,只用一位二进制数表示,而模拟量是指由传感器等提供的物理量转换成相应的电信号,而这些电信号的数值在一定区间内是连续变化的。模拟量必需先经______转换后再输入到CPU中。
[多项选择]下列关于清宣止咳颗粒治法正确的是()
A. 具疏风清热,宣肺止咳的功能
B. 用于小儿外感风热所致的咳嗽
C. 用于痰浊阻肺所致的顿咳
D. 脾虚易腹泻者慎用
E. 糖尿病患儿禁服
[判断题]2.12 公安交管部门要商市场监管部门明确检验机构清理非法中介的管理职责,对秩序混乱.非法中介扰民问题突出的,要严格追究责任。
A.正确
B.错误
[判断题]国内外学者对有效教学特征的认识上应该追求一致。
[单选题]在( )时间内电流所做的功叫做电功率。
A.规定
B.标称
C.单位
[填空题]January 31, 1999
2701 Meadow Lane
Brooklyn, New York 11212
Box 210
New York Times
New York 100036
Dear sir,
This letter is in response to your advertisement in the Monday, January 31, New York Times.
I believe that I may have the qualifications you are seeking. I have worked in advertising for six years, beginning as a secretary and working my way up to my current position as an administrative assistant with a major Madison Avenue Agency. My responsibilities include preparing dossiers (档案材料) on clients and product research, typing and light editing of progress reports, and client contact, primarily by telephone. Although I am happy with my current position, I am seeking a position that will afford me greater opportunity for client-liaison (客户联络) work.
If you feel that I have the experience and skills you require, I would very much like to meet with you personally to discuss the job. I am enclosing a copy of my resume, which further details my work exper
[多项选择]市场调查报告的主体部分,主要包括的项目有()
A. 基本情况
B. 原因分析
C. 前景预测
D. 对策建议
[单项选择]临修车的修理部位质量保证期限为该部位的()。
A. 质保期
B. 寿命管理期限
C. 下次定检到期(包括顺延日期)
D. 段修到期
[单项选择]Windows中关于菜单的描述,不正确的是()
A. 菜单分"菜单栏菜单"和"快捷菜单"两种
B. 单击快捷菜单外的其它地方,可关闭快捷菜单
C. 选中菜单中的命令项,即可执行对应的操作
D. 所有应用程序的菜单项没有差别
[单选题] Oh, your flight is a()flight of CSN and KLM and that flight is run by CSN.
A. code-share
B. excellent
C. joint
D. code-joint
[单选题]大型养路机械换砟,使用大型养路机械捣固、稳定车作业,采用三捣两稳作业程序,列车限速的速度阶梯是( )。
A.第一列25 km/h,第二列45 km/h,第三列60 km/h,24 h后恢复正常
B.第一列35 km/h,第二列60 km/h,第三列80 km/h,24 h后恢复正常
C.第一列60 km/h,第二列 80 km/h,第三列120 km/h,24 h后恢复正常
D.第一列80 km/h,第二列120 km/h,其后恢复正常(允许速度≤120 km/h的线 路为80km/h,24h后恢复正常)
[判断题]小规模的本地市场,应当以人员推销和商品陈列为主,不必使用广泛的广告。
A.正确
B.错误
[多选题](2019年真题)履约担保的形式包括()。
A.保兑支票
B.银行保函
C.信用证明
D.担保书
E.保证金
[多项选择]建设单位收到工程施工承包单位的验收申请后,应组织()等方面人员进行验收,并形成验收报告。
A. 施工单位
B. 检测单位
C. 设计单位
D. 监理单位
E. 质量监督机构
[单项选择]

{{I}}Questions 11—13 are based on the following monologue about aspirin. You now have 15 seconds to read Questions 11—13.{{/I}}
In what way can aspirin help heart surgery patients according to the doctors
A. Prevent losing blood.
B. Help them keep awake.
C. Help people move blood.
D. Prevent blood from thickening and blood vessels from being blocked.
[单选题] 无刷电机与有刷电机的区别有
A. 无刷电机效率较高
B. 有刷电机效率较高
C. 两类电机效率差不多
[判断题]高铁施工、维修及上道检查作业必须在天窗点内进行,天窗时段外不得进入封闭栅栏内.
A.正确
B.错误
[判断题]机车驶上落轮机前,应先检查落轮机的作用是否良好及落轮机上的钢轨与地面钢轨是否连接牢固。( )
A.正确
B.错误
[单选题]一阶被控对象的特性参数主要有(  )。
A.放大系数和时间常数
B.比例系数和变化速度
C.静态参数和衰减速度
D.动态参数和容量参数
[单选题]秘密载体应当指定专人保管,严格( )等手续。
A.审批、清点、登记、签字
B.清点、登记、签字、审批
C.登记、签字、审批、清点
D.签字、登记、清点、审批
[单项选择]Will you please go and ask Mum ________you go to the party tonight


A. will she let
B. if she lets
C. if she will let
[单项选择]患者,女,62岁,哮喘反复发作30年,此次因受凉再发,服氨茶碱及异丙嗪(非那根)无效,哮喘已持续20小时,现在最宜加用的药物是()
A. 沙丁胺醇(舒喘灵)
B. 肾上腺素
C. 氨茶碱静脉点滴
D. 静脉滴注甲泼尼松龙
E. 硝苯地平(心痛定)
[判断题]Bresenham直线算法中,无论斜率大于1还是小于1,其误差判别式都是一样的。
[单项选择]

As the plane circled over the airport, everyone sensed that something was wrong. The plane was moving unsteadily through the air, and (41) the passengers had fastened their seat belts, they were suddenly (42) forward. At that moment, the air-hostess (43) . She looked very pale, but was quite (44) . Speaking quickly but almost in a whisper, she (45) everyone that the pilot had (46) and asked if any of the passengers knew anything about machines or at (47) how to drive a car. After a moment’s (48) , a man got up and followed the hostess into the pilot’s cabin. Moving the pilot (49) , the man took his seat and listened carefully to the (50) instructions that were being sent by radio from the airport (51) . The plane was now dangerously close (52) the ground, but to everyone’s (53) , it soon began to climb. The man had to (54) the airport several t
A. shifted 
B. thrown 
C. put 
D. moved

[单选题]计费系统中,计费起始时间应该为 ,计费结束时间为电路和拆线时间。( )
A.主叫用户摘机时间
B.主叫用户占用时间
C.被叫用户振铃时间
D.被叫用户应答时间
[单选题]《南昌铁路局高铁动车组旅客站车专项服务标准》(南铁客〔2014〕334号)规定:随车保洁员在商务座旅客用餐时间开始后每隔(),使用保洁小推车对商务座旅客丢弃物品进行一次全面清理,整理小桌板、更换清洁袋
A.20分钟
B.40分钟
C.30分钟
D.1小时
[单选题] 吊篮在( )级以上风等恶劣气候下严禁使用。
A.4
B.5
C.6
[简答题]电气化铁路区段,具有升降、伸缩、移动平台等功能的机械设备进行施工、检查、养护、装卸等作业时,安全距离的规定是?

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