热门试题:
[不定项选择题]A.主细胞
A.壁细胞
B.黏液细胞
C.G细胞
D.嗜银细胞
E.分泌胃泌素的是()
[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.
15（）
A. to find out
B. to be found
C. to find
D. to be found on
[判断题]环境温度低于4℃,或高于70℃的场所应采用干式系统。()
A.正确
B.错误
[单项选择]莲子肉的功效是（）
A. 清心除烦
B. 补益肝肾
C. 养心安神
D. 补脾祛湿
E. 益气养阴
[多选题]办理国际贸易融资业务前，应把好国际贸易融资的客户准入关，真正做到从源头上“了解客户”，核实企业的（）等情况，确认企业申请的融资业务具有真实贸易背景，符合监管规定。
A.生产经营
B.财务状况
C.行业特点
D.产品市场
[单项选择]天线在自由空间做接收和发射其增益（）。
A. 变大
B. 变小
C. 不变
D. 有时变大，有时变小
[判断题]货物损失鉴定一般应自编制货运记录次日起10个工作日内完成。﹙ ﹚
A.正确
B.错误
[单项选择]"I want to criticize the social system, and to show it at work, at its most intense." Virginia Woolf’ s provocative statement about her intentions in writing Mrs. Dalloway has regularly been ignored by the critics, since it highlights an aspect of her literary interests very different from the traditional picture of the "poetic" novelist concerned with examining states of dream and vision and With following the intricate pathways of individual consciousness. But Virginia Woolf was a realistic as well as a poetic novelist, a satirist and social critic as well as a visionary: literary critics’ casual dismissal of Woolf’ S social vision will not withstand thorough examination.
In her novels, Woolf is deeply engaged by the questions of how individuals are shaped (or deformed) by their social environments, how historical forces impinge on people’ s lives, how class, wealth, and gender help to determine people’ s fates. Most of her novels are rooted in a realistically represented social
A. Have literary critics ignored the social criticism inherent in the works of Chekhov and Chaucer
B. Does the author believe that Woolf is solely an introspective and visionary novelist
C. What are the social causes with which Woolf shows herself to be sympathetic in her writings
D. WasD.H. Lawrence as concerned as Woolf was with creating realistic settings for his novels
[单项选择]国家采取行政、经济、法律、技术等手段对耕地实施的综合性保护措施是指( )
A. 耕地管理
B. 耕地分配
C. 耕地保护
D. 耕地限制
[单项选择]氨基糖苷类抗生素和硫酸镁合用引起呼吸麻痹是属于药物之间的（）
A. 敏感化现象
B. 竞争性拮抗作用
C. 非竞争性拮抗作用
D. 作用于同一作用部位或受体的协同或相加作用
E. 作用于不同作用点或受体时的协同作用
[单选题]（2020年真题）根据《证券公司监督管理条例》规定，下列关于证券公司对客户负有诚信义务的说法，错误的是（ ）
A.证券公司不得侵犯客户的财产权
B.证券公司不得侵犯客户的选择权
C.证券公司不得侵犯客户的荣誉权
D.证券公司不得侵犯客户的知情权
[单项选择]前牙3／4冠邻面预备时下面错误的是
A. 近远中面平行
B. 与长轴平行
C. 唇侧边界止于接触区
D. 在唇舌向与邻面外形一致
E. 两邻面向长轴稍聚合2。～5。
[单项选择]
This is supposed to he an enlightened age, but you wouldn’t think so if you could hear what the average men think of the average women. Women won their independence years ago. After a long, biter struggle, they now enjoy the same educational opportunities as men in most parts of the world. They have proved repeatedly that they are equal and often superior to men in almost every field. The hard-fought battle for recognition has been won, but it is by no means over. It is men, not women who still carry on the sex war because their attitude remains basically hostile. Even in the most progressive societies, women continue to he regarded as second-rate citizens. Hearing some men talk, you’d think that women belong to a different species. On the surface, the comments made by men about women’s abilities seem light-heartiness does not conceal the real contempt (轻视) that men feel for women. However much men sneer at women, their claims to superiority are not borne out by
A. women have fought very hard for success
B. women have to bear and rear children
C. women have never succeeded before
D. men still carry on the sex war
[判断题]《牵引变电所安全工作规程》规定：供电调度员确认该作业已经结束，具备送电条件时，给予消除作业命令时间，双方记入作业命令记录中。
A.正确
B.错误
[单选题]配电《安规》5.1. 11规定:进入SF6配电装置室,应( )。
A.先检测
B.先通风
C.使用防护用品
D.先散热
[单项选择]诚信的特征是（）。
A. 社会性、强制性、自觉性、智慧性
B. 通识性、智慧性、止损性、资质性
C. 人本性、资质性、历史性、公约性
D. 通识性、规范性、普遍性、止损性
[单选题]断路器的额定电压决定路断路器的（ ）。
A.绝缘水平
B.载流量
C.灭弧能力
[简答题]承兑人或者付款人出具的拒绝证明，应当明确记载哪些事项
[单选题]《国家综合性消防救援队伍基层建设纲要(试行)》规定,贯彻党的群众路线,坚持基层至上,尊重指战员主体地位和创造精神,推进暖心、帮带、心理“三项工程”,真心实意为( )服务。
A.私人
B.企业
C.人民
D.基层
[单选题] 机动车驾驶人在一个记分周期内累积记分达到24分未满36分的,应当参加_____。
A.道路交通安全法律、法规和相关知识考试
B.场地驾驶技能考试
C.道路交通安全法律、法规和相关知识考试和道路驾驶技能考试
D.场地驾驶技能考试和道路驾驶技能考试
[单项选择]恶性高血压的病变特征是（）
A. 大动脉粥样硬化
B. 发生脑出血
C. 发生细动脉玻璃样变
D. 发生小动脉内膜增生
E. 增生性小动脉硬化和坏死性细动脉炎
[判断题]实施ISO9001标准可根据自己提供的产品的特点对标准中任何不适用的要求进行删减
A.正确
B.错误
[单项选择]香农一施拉姆传播模式的最突出特点是重视信源和接收者之间的（）。
A. 建立反馈环节
B. 防止信道干扰
C. 共同经验领域
D. 获取有效信息
[单选题]推进军人荣誉体系建设,培养()的新时代革命军人。
A.有思想、有本事、有血性、有品德
B.有灵魂、有本事、有血性、有品德
C.有灵魂、有本领、有血性、有作风
D.有灵魂、有本事、有血性、有道德
[简答题]个人创新能力包括哪些基本内容？如何提高自己的创新能力？
[单选题]触电急救应分秒必争，一经明确心跳、呼吸停止的，立即就地迅速用（）进行抢救，并坚持不断地进行，同时及早与医疗急救中心（医疗部门）联系，争取医务人员接替救治。
A.心脏按压法
B.口对口呼吸法
C.口对鼻呼吸法
D.心肺复苏法
[填空题]动车组随车工具和行车、应急、客运备品应根据车型结构特点（ ）、（ ）存放。
[单项选择]下列关于宪法特征的描述错误的是（）。
A. 普通法律不得与宪法相抵触
B. 在我国，宪法的修改必须是由全国人大常委会或者三分之二以上的全国人大代表提议，始得启动修宪程序
C. 宪法具有最高的法律效力
D. 宪法是一切组织、机构和个人的根本活动准则
[单项选择]
关于Ad hoc网络的描述中，错误的是（）。
A. 没有固定的路由器
B. 需要基站支持
C. 具有动态搜索能力
D. 适用于紧急救援等场合
[单选题] 5G的高频通信技术可满足()的ITU峰值速率指标要求
A.1-10Gbps
B.10-20Gbps
C.20-30Gbps
D.30-40Gbps
[判断题]视频监视系统网管支持TRAP告警上报，可以接收其他网管设备的告警信息，统一呈现
A.正确
B.错误
[判断题]承运人只能按学生减价优待证上记载的车站发售车票。( )
A.正确
B.错误
[判断题]经常有人工作的场所及施工车辆上应配备急救箱,存放急救用品,并应指定专人定期检查、补充或更换()
A.正确
B.错误
[多项选择]Windows和启动应用程序的方法有( )。
A. 从“开始”菜单启动应用程序
B. 从桌面的快捷方式启动应用程序
C. 从“快速启动”的快捷方式启动应用程序
D. 直接打开应用程序处理的文档
[单选题] 熔化焊机通电检查的直接目的是()。
A.检查控制设备各个按钮与开关操作是否正常
B.检查焊接电流是否正常变化
C.检查水和气是否通畅
[判断题]( )为锻炼提高各级单位紧急行动能力,检查战斗准备状况,通常中队(站)每半月、大队月、支队每季度至少进行1次紧急集合演练。
A.正确
B.错误
[填空题]真空回潮机的抽空需要达到到的真空度为（）毫米汞柱。
