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[多选题]不是通过化学作用抑制链式反应实现灭火的灭火剂是( )。
A.水
B. 二氧化碳
C. 卤代烷 1301
D. 干粉

热门试题:

[单项选择]检查尿沉渣时,应将尿液离心沉淀,离心的速度为()。
A. 1000r/min
B. 100r/min
C. 10000r/min
D. 5000r/min
[单项选择]下列哪种证件是驾驶机动车上路行驶应当随车携带()
A. 机动车登记证
B. 机动车保险单
C. 机动车行驶证
D. 出厂合格证明
[单选题]S-MWD+伽马仪器在工作中发现仪器信号被干扰导致伽马数据出现错误,处理方法为( )。
A.不做修改
B.删除错误的数据点
C.手动修改错误的数据
D.把错误的数据变成无效,重新复测出现错误数据的井段
[多项选择]综合业务系统在对外资金清算模式上,采用()两级清算模式。
A. 县级
B. 市级
C. 省级
D. 信用社级
[判断题]配制、装载供应品的单位对装入航空器的供应品,必须保证其安全性。
A.正确
B.错误
[单选题]E-B-001 3 2 5
用户在家使用ADSL上网的时候,使用的是( )来连接ADSLmodem和远端局端DSLAM设备。
A.同轴电缆
B.五类UTP双绞线
C.五类STP双绞线
D.普通电话线
[单项选择]患者,男89岁,因排尿困难入院,诊断为前列腺肿大入院,入院后给予留置导尿5天后,患者出现泌尿系感染。你认为该患者泌尿系感染最直接的因素足
A. 以上都不是
B. 性别
C. 卧床
D. 留置导尿
E. 年龄
[判断题]现场检修电气设备时,拆卸前必须切断电源。 (判断题)
A.正确
B.错误
[多选题]气焊时必须使用气焊焊剂的有()等材料。
A.铸铁
B.低碳钢
C.低合金结构钢
D.铜
E.铝
F.不锈钢
[填空题]

Do you wish to enter a summer school of English in Britain Here are some tips (指导).
Most summer school courses in Britain last for two to four weeks. During that time, students live either with a British family, or at the school, or in a hotel. They have about 15 hours of lessons every Monday to Friday, usually in the mornings. Each school has a lot of different courses. Some arc for beginners and others are for intermediate or advanced students. The lessons are fun, the classes are small and the teachers are all from English-speaking countries. But summer school students don’t just speak English in the classroom. They are in Britain, so they speak and read and hear it outside, too. That’s why they learn so quickly and why a summer school course is really a holiday. Only one third of each course is taught in the classroom. The rest takes place during a busy afternoon and evening timetable of visits, sports and games. These activities help everyone to m

[判断题]列车长度应根据运行区段内各站到发线的长度,并须预留30m的附加制动距离确定。( )(应知应会-《技规》第247条)
A.正确
B.错误
[多项选择]导管固定时管路支架的间距宜均匀,关于管路的支架距离下列()描述符合标准?
A. 无缝钢管水平敷设时,支架距离为1m~1.5m
B. 无缝钢管垂直敷设时,支架距离为1.2m~2.0m
C. 铜管、塑料管水平敷设时,支架距离为0.5m~0.7m
D. 铜管、塑料管垂直敷设时,支架距离为1m~1.2m
[填空题]取得《网络预约出租汽车驾驶员证》的人员,与网约车平台公司签订劳动合同或协议,注册后方可从事网约车服务。解除劳动合同或协议的,应及时()。
[单选题]依据《安全生产法》规定,作业场所和工作岗位存在的危险因素、防范措施以及事故应急措施由()如实告知从业人员。
A.工会
B.安全生产监管部门
C.生产经营单位
[单项选择]

三、根据所给图表。回答下列问题。
观众与展商每小时入场情况表
(单位:人次)

9

27
时间 8点 9点 10点 11点 12点 13点 14点 15点 16点 17点
展商 51 967 1301 754 263 188 192 245 124 48
观众 4
A. 9点时展区内的展商比观众多
B. 11点后入场的展商呈递减趋势
C. 27日10点入场者超过半数是展商
D. 29日绝大部分观众是10点入场
[名词解释]议程设置
[单选题]查铺查哨中下列哪项不正确( )
A.查铺查哨时可以采取隐蔽的方式接近营区警卫人员
B.查铺时,动作要轻,不影响人员睡眠
C.查铺查哨发现问题应当及时纠正和处理
D.每次查铺查哨的情况,应 当进行登记
[单选题]‗年2月1日,甲、乙、丙投资设立一个有限责任公司。公司章程约定甲、乙、丙各自投资100万元,其中,丙未在规定的期限内缴足出资,甲、乙也一直没有要求丙补足出资。2020年6月1日,该公司的债权人丁要求丙对公司不能清偿的债务承担责任。根据公司法律制度规定,下列说法中正确的是( )。
A.丙可以以自己补足出资的义务已过诉讼时效为由进行抗辩
B.丙不得以自己补足出资的义务已过诉讼时效为由进行抗辩
C.甲、乙对丙不按照规定缴纳出资不承担责任
D.债权人丁不能要求丙对公司不能清偿的债务承担责任
[不定项选择题]蛤蚧除助肾阳、益精血外,又能
A.润肠通便
B.活血
C.温脾止泻摄唾
D.安胎
E.补肺气,定喘嗽
[多选题] 国际结算的主要方式有()
A.T/T电汇 ;
B. 托收 ;
C.信用证 ;
D.代付
[填空题]常用的电子支付工具包括 【18】 、电子信用卡和电子支票。
[单项选择]资产配置中,低风险、低收益的储蓄债券资产与高风险、高收益的股票基金资产比例占主导地位,而中风险、中收益的资产占比最低,这种资产配置类型是( )。
A. 金字塔型
B. 哑铃型
C. 纺锤型
D. 梭镖型
[多选题] 参加带电作业的人员,应经专门培训,并经( )后,方能参加相应的作业。[2.0分]
A.实习三个月
B.考试合格
C.领导批准
D.单位书面批准
[单选题]弧电压是由电弧长度来决定的,一般要求电弧长度( )焊条直径。
A.小于或等于
B.大于或等于
[单项选择]Eye contact is important because wrong contact may create a communication ________.
A. tragedy
B. vacuum
C. question
D. barrier
[单项选择] Even plants can run a fever, especially when they are under attack by insects or disease. But (1) humans, plants can have their temperature (2) from 3,000 feet away—straight up. A decade ago, (3) the infrared scanning technology developed for military purpose and other satellites, physicist Stephen Paley (4) a quick way to take the temperature of crops to determine (5) ones are under stress. The goal was to let farmer (6) target pesticide spraying (7) rain poison on a whole field, which (8) include plants that don’t have the pest problem. Even better, Paley’s Remote Scanning Services Company could detect crop problem before they became (9) to the eye. Mounted on a plane flown at 3,000 feet (10) , an infrared scanner measured the heat emitted by crops. The data were (11) into a color-coded map showing (12) plants were running "fevers". Farmers could then spot spray, using 50 to 70 percent less pesticide than they (13) would. The bad news is that Paley’s company closed down in 1984, after only three years. Farmers (14) the new technology and long-term backers were hard (15) . But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to (16) into operation. Agriculture experts have no doubt about the technology works. "This technique can be used (17) 75 percent of agricultural land in the United States," says George Oerther of Texas A&M. Ray Jackson, who recently retired from the Department of Agriculture, thinks (18) infrared crop scanning could be adopted by the end of the decade. But (19) Paley finds the financial backing (20) he failed to obtain 10 years ago. 6()
A. precisely
B. extraordinarily
C. exceedingly
D. extremely
[单选题](30688)按《铁路货车统计规则》编号,非号码制货车停留时间登记簿是()。
A.运统5
B.运统6
C.运统8
D.运统9
[单项选择]将物质技术质量定型化和定量化称为()
A. 统一化
B. 系列化
C. 规格化
D. 规范化
E. 数字化
[单项选择]下肢练功的主要目的是
A. 恢复负重和行走功能
B. 促进血液运行
C. 保护关节灵活性
D. 防止关节功能障碍
E. 防止肌肉萎缩
[多项选择]当电子点火系故障导致发动机不启动,应首先检查()。
A. 导线有无损坏
B. 插按器是否接触良好
C. 电源供电是否良好
D. 有无电路现象
[单项选择]患者女性,33岁。劳累后心悸气促7年,检查:二尖瓣面容,第一心音亢进,心尖部可闻及Ⅲ级隆隆样舒张期杂音,有开瓣音,P2>A2,心律规则,本次因为气促不能平卧伴咯血入院。其治疗措施是()
A. 吸氧
B. 西地兰静脉注射
C. 镇咳剂
D. 速尿静脉注射
E. 止血剂
[多选题]除保密性外,进行健康咨询需遵循的基本原则还包括:
A. 建立良好关系原则
B. 针对性
C. 情感中立
D. 参与适度
[单项选择]患儿,男,10岁。突发神志丧失,手中持物失落,所持之物落地后即醒。最可能的诊断是
A. 复杂部分发作
B. 部分性发作
C. 杰克逊(Jackso癫癎
D. 失神发作
E. 不能分类的癫癎发作
[单选题]每个人都要经历抬头→翻身→坐→爬→站→走等过程,这反映了人体生长发育的(  ) 规律。
A.连续性和阶段性
B.不均衡性
C.个体差异性
D.相互关联性
[单项选择]
Questions 6-10
For centuries, explorers have risked their lives venturing into the unknown for reasons that were to varying degrees economic and nationalistic. Columbus went west to look for better trade routes to the Orient and to promote the greater glory of Spain. Lewis and Clark journeyed into the American wilderness to find out what the U.S. had acquired when it purchased Louisiana, and the Apollo astronauts rocketed to the moon in a dramatic show of technological muscle during the cold war.
Although their missions blended commercial and political-military imperatives, the explorers involved all accomplished some significant science simply by going where no scientists had gone before.
Today Mars looms as humanity’s next great terra incognita. And with doubtful prospects for a short-term financial return, with the c
A. To find out if life ever existed there.
B. To see if humans could survive there.
C. To prove the feasibility of large-scale space ventures.
D. To show the leading role of science in space exploration.
[单项选择]女,22岁,主诉:近3年来,咀。爵硬物或刷牙时牙龈出血。若诊断为慢性龈缘炎,牙龈炎症不会有哪些临床表现
A. 龈炎症一般局限于游离龈和龈乳头
B. 牙龈炎症以上前牙区最为显著
C. 炎症以前牙区为主,也可波及全口牙
D. 牙龈松软光亮
E. 严重时波及附着龈
[单选题]关于蛋白质的下列叙述,不正确的是( )
A.β折叠的长度压缩不如α螺旋
B.加入硫酸铵可使溶液中的蛋白质变性
C.有些蛋白质可以两种不同的构象存在
D.蛋白质的糖基化或磷酸化可影响其构象
E.肽键的部分双键特性对蛋白质的二级结构形成极为重要

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