热门试题:
[单选题] 喷油器开启持续时间由( )控制。
A.电控单元
B.点火开关
C.曲轴位置传感器
D.凸轮轴位置传感器
[单选题]男性,70岁,反复冬春季节咳嗽、咳白痰10年,胸闷、气急加重半天。如果要进行进一步检查,哪项检查对判断疾病的严重程度最有帮助?( )
A.X线胸片
B.胸部CT
C.纤维支气管镜
D.动脉血气分析
E.血常规
[单项选择]商业助学贷款实行的原则不包括( )。
A. 风险补偿
B. 有效担保
C. 部分自筹
D. 按期偿还
[判断题]判断题:乳化液的比热容小,粘度小,流动性好,主要起润滑作用。( )
A.正确
B.错误
[判断题]直流电的危险性相对地轻于交流电。( )
A.正确
B.错误
[不定项选择题]共用题干
When Our Eyes Serve Our Stomach
Our senses aren't just delivering a strict view of what's going on in the world;they're af-fected by what's going on in our heads. A new study finds that hungry people see food-related words more clearly than people who'ye just eaten.
Psychologists have known for decades that what's going on,inside our head affects our senses. For example,poorer children think coins are larger than they are,and hungry people think pictures of food are brighter. Remi Radel of University of Nice Sophia-Antipolis,France,wanted to investi-gate how this happens. Does it happen right away as the brain receives signals from the eyes or a lit-tle later as the brain's high-level thinking processes get involved.
Radel recruited 42 students with a normal body mass index. On the day of his or her test,each student was told to arrive at the lab at noon after three or four hours of not eating. Then they were told there was a delay. Some were told to come back in 10 minutes;others were given an hour to get lunch first. So half the students were hungry when they did the ex-periment and the other half had just eaten.
For the experiment,the participant looked at a computer screen. One by one,80 words flashed on the screen for about 1/300th of a second each. They flashed at so small a size that
the students could only consciously perceive. A quarter of the words were food-related. After each word,each person was asked how bright the word was and asked to choose which of two words they'd seen一a food-related word like cake or a neutral word like boat. Each word ap-peared too briefly for the participant to really read it.
Hungry people saw the food-related words as brighter and were better at identifying food-related words. Because the word appeared too quickly for them to be reliably seen,this means that the difference is in perception,not in thinking processes,Radel says.
“This is something great to me. Humans can really perceive what they need or what they strive for. From the experiment,I know that our brain can really be at the disposal of our mo-tives and needs,”Radel says.
Why did the 80 words flash so fast and at so small a size on the screen?
A.To ensure the participant was unable to perceive anything.
B.To guarantee each word came out at the same speed and size.
C.To shorten the time of the experiment.
D.To make sure the participant had no time to think consciously.
[单选题]根据血压水平的定义和分类,血压130/88mmHg属于
A. 正常血压
B. 正常高值
C. 1级高血压
D. 2级高血压
E. 3级高血压
[单选题]下列哪一种是最早和最简单的涂装方法( )
A.刷涂法
B.浸涂法
C. 流涂法
D.辊涂法
[单选题]对基层人民法院已经生效的行政判决、裁定,发现违反法律、法规规定的,无权按照审判监督程序提出抗诉的是()
A.同级人民检察院
B.同级人民检察院的上一级人民检察院
C.省、自治区、直辖市人民检察院
D.最高人民检察院
[判断题]跨地区从业的特种设备作业人员,可以向从业所在地的发证部门申请复审。
A.正确
B.错误
[单选题]禁止作业人员越过( )的线路对上层、远侧线路进行验电。
A.未停电
B.未经验电、接地
C.未经验电
D.未停电、接地
[判断题]CRH5型动车组15kW蓄电池充电机将400VAC,50Hz三相供电电压转换为额定24V直流电压用于低压配电。
A.正确
B.错误
[判断题]放煤步距和截深相同,一般采取一刀一放为一个循环的方式。
A.正确
B.错误
[多选题] 公安机关下列人员应当进行宪法宣誓:()。
A. 公安机关新任命的领导干部
B. 退休民警
C. 新入职的公安民警
D. 民警子女
[多选题]多选:非法集资有以下几个特征要件( )。
A.非法性
B.公开性
C.利诱性
D.社会性
[多选题]修理中的机器应做好防止转动的安全措施,如切断(),所有有关闸板、阀门等应关闭,上述地点都应挂上安全标志牌。
A.电源
B.气源
C.水源
D.油源
[单项选择]生态入侵是指人们有意识或无意识地把某种生物带人适宜其栖息和繁衍的地区,使得该生物种群不断扩大,分布区不断稳定地扩展,从而危害当地的生产和生活,改变当地生态环境的过程。 根据上述定义,下列属于生态入侵的是( )。
A. 某实验室由于管理不当将试验用的致病性结核菌株散播了出去,造成结核病在周围居民中流行
B. 美国科学家将从我国引进的野生大豆与当地品种杂交,培育出抗大豆萎黄病的优良品种,该品种现已彻底取代了美国传统大豆
C. 某地发生大面积放射性核素泄漏,使某种植物发生变异,其繁殖力超强,逐渐取代了该地域内的其他植物
D. 产于南美洲的凤眼莲花朵艳丽,曾经作为观赏植物被我国引进,致使云南滇池因为凤眼莲的疯狂蔓延而鱼虾绝迹
[单项选择]儿科处方的印刷用纸为()。
A. 淡红色
B. 淡绿色
C. 白色
D. 淡黄色
[判断题]无线基地台(BTS)是由基站控制器BSC控制,服务于某个小区的无线收发信设备,完成BSC与无线信道之间的转换,实现BTS与移动台MS之间通过空中接口的无线传输及相关的控制功能。( )
A.正确
B.错误
[单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}}
A. On the whole, she liked the film.
B. She didn’t see the film.
C. The film was very exciting.
D. The film wasn’t as good as she’d expected.
[多选题]4.162.第162题智能变电站网络记录分析仪完成的基本功能包括()。
A.实时监视
B.捕捉
C.存储
D.分析和统计
[单选题]未满16周岁的公民,自愿申请领取居民身份证的,身份证有效期为()。
A.3年
B.5年
C.7年
D.10年
[判断题].在 CENTUMCS300.0. 系统的系统状态总貌窗口中,背景显示为白色的操作站表面该操作站是故障状态。
A.正确
B.错误
[单项选择]抢救由心室颤动引起的心脏骤停时,最有效的方法是()。
A. 静脉注射利多卡因
B. 皮下注射肾上腺素
C. 植入心脏起搏器
D. 非同步电击复律
E. 口对口人工呼吸
[判断题]站内作业时,当作业本线股道封闭且相邻股道有列车停留或运行时,现场防护员可站在已封闭的股道内防护。
A.正确
B.错误
[单选题] 起重机钢丝绳用编结法连接时,编结长度应不小于钢丝绳直径的15倍,并不得短于( )m。
A.0.2
B.0.3
C.0.4
D.0.5