热门试题:
[简答题]假设由哪两类变量构成?举例说明如何确立这两类变量。
[判断题]一个工作负责人可同时执行一张电力通信工作票和一张电气专业的工作票,而且能同时执行多张电力通信工作票。
A.正确
B.错误
[判断题]2.31 驾驶人在发生交通事故后因抢救伤员变动现场时要标明位置。
A.正确
B.错误
[单选题]图片类组件单图,在系统中要求的尺寸是:
A.330*330
B.705*330
C.705*100
D.100*100
[单选题]处于活动期的系统性红斑狼疮患者,其辅助检查可能出现
A.血沉降低
B.免疫球蛋白降低
C.血清补体C3增多
D.抗核抗体定量降低
E.皮肤狼疮带试验阳性
[单项选择]女性,37岁,因喷洒农药杀虫脒后,出现头晕、嗜睡、呕吐、发绀和血尿,拟"农药杀虫脒中毒"。应采取下列急救措施,哪一项是不正确的()
A. 迅速脱离中毒环境
B. 可用1%美蓝(亚甲蓝)30~50ml缓慢注射
C. 补液加速毒物排出
D. 1%美蓝(亚甲蓝)200ml缓慢注射
E. 对症治疗:碳酸氢钠片1g,3次/日,口服
[单项选择]Passage Four
A biological clock is what tells plants, animals, and other organisms how to organize their time. This ‘clock’ helps plants and animals change their routine when they move to places with different climates and environments. Most biological clocks are based on the movement of the sun and follow a twenty-four hour cycle called a circadian rhythm. Some animals sleep only at night, making them diurnal. Animals that sleep during daytime are nocturnal. Flowers are diurnal because they close their petals at night but they open again in the morning. Bats sleep in the daytime so they are nocturnal.
Some biological clocks also follow an annual cycle, especially in animals that have annual migrations. Animals that have annual cycles do different things at different times of year. Their actions are determined by the seasons.
Different animals can live in the same area when their biological clocks make them look for food at different times of day. This process also
A. human
B. flowers
C. bats
D. cows
[判断题]调车长负责调车作业的指挥工作,接收并布置调车作业计划和有关注意事项,组织调车作业人员安全、准确、及时地完成调车任务。
A.正确
B.错误
[单项选择]根据我国《信托法》的规定,下列选项中,不属于公益信托的是( )。
A. 甲设立的救助玉树灾民的信托
B. 乙设立的帮助残疾人再就业的信托
C. 丙设立的鼓励环境保护的信托
D. 丁设立的照顾其子小丁将来生活的信托
[单选题]抗日战争胜利纪念日是在每年的( )
A.44442
B.44469
C.44543
D.44423
[单选题]使用自动闭塞法行车,动车组列车在完全监控、引导或部分监控模式下运行时,行车凭证为( )。
A.(A)调度命令
B.(B)出站信号机(线路所通过信号机)显示的允许运行的信号
C.(C)列控车载设备显示的允许运行的速度值
[判断题]运营线的行⻋组织实行“行⻋调度员—司机”一级管理,综控员辅助行⻋工作,列⻋运行由司机负责。
A.正确
B.错误
[判断题]第一届全国人民代表大会选举的人大常委会委员长是董必武。( )
A.正确
B.错误
[单选题]‗年6月13日“蛟龙”号深海载人潜水器圆满完成为期5年的试验性应用航次全部下潜任务,其中11个潜次作业水深超过( )米,为下一阶段业务化运行奠定坚实基础。
A.5500
B.6000
C.6500
D.7000
[判断题]两车在车场会车时,驶入车辆应当停止运行,让驶出车辆先行。
A.正确
B.错误
[判断题]453.12.持证人不能继续驾驶铁路机车车辆的,包括持证人死亡、丧失行为能力、退休、限制行为能力影响驾驶的、吸食或注射毒品、长期服用依赖性精神药品等,应当注销驾驶证。 (《驾驶人员资格许可》)
A.正确
B.错误
[判断题]S700K道岔道岔锁闭时,尖轨(心轨)尖端至第一牵引点处尖轨(心轨)与基本轨(翼轨)的间隙≤0.3mm,其余密贴部位间隙≤1.0mm。
A.正确
B.错误
[单项选择]患者,男性,70岁。突发胸骨后持续疼痛,经休息或含服硝酸甘油无效,心电图示急性前壁心肌梗死,二度房室传导阻滞。除立即给予止痛外,应迅速给予
A. 利多卡因静脉给药
B. 阿托品皮下注射
C. 呋塞米静脉注射
D. 地高辛口服
E. 维拉帕米口服
[多选题]截至2021年8月,国家电网有限公司已在以下()等国家和地区成功投资运营骨干能源网资产。
A.荷兰
B.巴西
C.澳大利亚
D.菲律宾
[简答题]真实汇率是从名义汇率中扣除物价因素得到的,等于按外国与本国物价指数之比进行的名义汇率。
[单选题]层次结构内容全面,覆盖面广,适用于( )为范围或对象的标准体系构建。
A.机构或大型建设项目
B.专项或普通项目
C.小型项目
D.一般建设项目
[多选题]下列说法中正确的是( )。
A.保证幕墙与建筑主体之间连接牢固
B.形成自身防雷体系,不用与主体建筑的防雷装置有效连接
C.幕墙后侧与主体建筑之间不能存在缝隙
D.在幕墙与楼板之间的缝隙内填塞岩棉,并用耐热钢板封闭
E.幕墙的通风换气可以用开窗的办法解决
[单选题]口对鼻人工呼吸吹气时,要将伤员嘴唇紧闭,防止()
A.漏气
B.吸入污垢
C.掉入飞虫
D.被咬伤
[判断题]各营业厅对电费充值卡、当天无法解交的现金、剩余柜面备用金、支票、本票、汇票等应由专人及时进行保管,确保资金安全。
A.正确
B.错误
[单项选择]假设ed为需求弹性,当()时,商品降价将使企业销售收入增加。
A. 0<
[单项选择]某地区居民队列研究发现,BMI(体重指数)>25.0的人群患高血压的危险性为其他人群的2.8倍(有统计学意义);而该地病例对照研究中发现,BMI(体重指数)>25.0的人群患高血压的OR为1.22(无统计学意义)。进一步研究表明此差异的原因是,病人诊断为高血压后,开始注意饮食、体育锻炼等。引起上述队列研究与病例对照研究结果之间差异的偏倚为()
A. 纳入偏倚
B. 奈曼偏倚
C. 检出偏倚
D. 无应答偏倚
E. 易感性偏倚
[单选题]药物的代谢器官最重要的是
A.脾脏
B.小肠
C.肝脏
D.胃
E.肾脏
[判断题]1344. ( )SL7-130水龙头冲管盘根的润滑脂注入量为0.2 kg。
A.正确
B.错误
[多选题]现在有NE1和NE2组成一个链行网络,NE1与NE2之间配置有E1业务。某日NE1收NE2的光纤中断(反向光纤没有中断),此时NE2会上报以下哪些告警?
A.MS_RDI
B.HP_RDI
C.AU_AIS
D.LP_RDI
[判断题]电控式动力转向系是在原有机械式转向系组成基础上增设一套液压助力装置。()
[单项选择]世界上第一个加强医疗单位是为哪种疾病患者所设立的()
A. 脑炎
B. 脊髓灰质炎
C. 肺炎
D. 创伤
[单选题]采用询价→报价→签订合同程序进行材料采购的方式是( )。
A.招标方式
B.询价方式
C.直接订购方式
D.市场采购方式
[判断题]有限空间作业必须配备个人防中毒窒息等防护装备,设置安全警示标识,严禁无防护监护措施作业。
A.正确
B.错误
[多选题]根据我国婚姻家庭法律规定,下列属于家庭关系的是( )
A.夫妻关系
B.父母与子女的关系
C.受继父或者继母抚养的继子女与继父母的关系
D.非婚生子女与生父母关系
[单项选择]患者女,65岁,近记忆力下降10年,言行不一致7年,生活不能自理3年,无自发语言1年。颅脑MRI:双侧海马萎缩,弥漫性皮质萎缩,脑室扩大。该患者所患疾病常伴有血管壁淀粉样物质沉积,证实其是否存在所用的特殊染色是()
A. Bodian染色
B. LFB髓鞘染色
C. PAS染色
D. 刚果红染色
E. 尼氏染色
[不定项选择题]共用题干
FDA : Human , Animal Waste Threatens Produce
The biggest food safety risk for fresh fruits and vegetables as they are grown,picked or processed comes from human and animal waste,the US Food and Drug Administration(FD
A)said Friday.
More than 9,000 Americans die each year from food-borne diseases and some scientists believe fresh produce is the biggest carrier of contamination.
The FDA issued a set of draft guidelines for US and foreign growers to carefully monitor worker hygiene, water quality,manure management and transportation.
These 34-page draft guidelines urged growers to give workers lessons on basic hygiene such as using soap to wash their hands,covering wounds that could come into contact with produce,and using only clean toilets.
The FDA guidelines identified"the major source of contamination"for fresh produce as human or animal feces.
"We think just proper controls and proper attention to detail would make a big difference in food safety,"said an FDA official."It is our belief that these guidelines would not be very costly."
But grower groups disagreed with the FDA's assessment."Most food-borne disease outbreaks that happen further down the distribution line are due to contamination because people preparing food are not properly washing their hands,"said Stacey Zawal,an official with United Fresh Fruit and Vegetable Association."That is not necessarily true for growers and packers."
Some US grower organizations have expressed concern that the agency is interfering with on-farm practices.Others object to the FDA's proposal to have growers formally document the picking,handling and transportation of produce so that health officials could quickly recall foods if necessary.
Consumer groups criticized the FDA guidelines as of little use because they will not carry the force of law.But stricter regulations could evolve as researchers find new technology or methods to kill harmful bacteria or parasites,the FDA said.
The FDA recommendations are due to be made final by the FDA later this year for use by US and foreign growers.The matter of encouraging foreign growers to adopt the guidelines remains somewhat tricky but FDA officials say it is vital because of the huge amount of imported produce.
The last paragraph suggests that_.
A.some tricks need to be adopted to encourage foreign growers to follow the FDA guidelines
B.a good way should be found to encourage foreign growers to follow the FDA guidelines
C.foreign growers consider the guidelines to be of great importance to them
D.it is almost impossible to ask foreign growers to follow the guidelines