更多“ 293K时于0.1L的容量瓶中配制天然胶的苯溶液，已知天然”相关的问题
下列关于”行车“礼仪说法正确的是：（）
A.骑车时，礼让行人，红灯不越线，黄灯抢行。
B.进出有人值守的大门，下车推行，以示尊重。拐弯前先做手势示意。
C.骑车时，礼让行人，红灯不越线，黄灯不抢行。
D.进出有人值守的大门，不用下车推行。拐弯前先做手势示意。
点击查看答案
翻车机的溜车线专为翻车而设计，属于特别用途线。
A . 正确
B . 错误
点击查看答案
每日四次的外文缩写为（）。
A.bid
B.tid
C.qid
D.q4h
点击查看答案
高中英语学业质量水平一共设置三个水平，这三个水平与必修课程、选择性选修课程和选修课程中的提高类课程有关联性。
A.对 B.错
点击查看答案
急惊风的四证是指（）
A.热、惊、痰、火
B.热、痰、惊、风
C.热、痰、火、积
D.热、风、火、寒
E.热、痰、积、惊
点击查看答案
下列哪些条件是劳动者应享有的职业卫生保护权利？（）
A . A、获得安全生产法律法规的教育、培训。
B . B、获得职业卫生教育、培训。
C . C、获得职业健康检查、职业病诊疗、康复等职业病防治服务。
D . D、拒绝违章指挥和强令进行没有职业病防护措施的作业。
E . E、保护劳动者健康及其相关权益。
点击查看答案
Text 2 Space is a dangerous place, not only because of meteors (流星) but also because of rays from the sun and other stars. The atmosphere again acts as our protective blanket on earth. Light gets through, and this is essential for plants to make the food which we eat. Heat, too, makes our environment endurable. Various kinds of rays come through the air from outer space, but enormous quantities of radiation (辐射) from the sun are screened off. As soon as men leave the atmosphere they are exposed to this radiation but their spacesuits or the walls of their spacecraft, if they are inside, do prevent a lot of radiation damage. Radiation is the greatest known danger to explorers in space. The unit of radiation is called "rem". Scientists have reason to think that a man can put up with far more radiation than 0.1 rem without being damaged; the figure of 60 rems has been agreed on. The trouble is that it is extremely difficult to be sure about radiation damage—a person may feel perfectly well, but the cells of his or her sex organs may be damaged, and this will not be discovered until the birth of deformed (畸形的) children or even grandchildren. Missions of the Apollo flights have had to cross belts of high radiation and, during the outward and return journeys, the Apollo missions have been quite short. We simply do not know yet how men are going to get on when they spend weeks and months outside the protection of the atmosphere, working in space laboratory. Rugs might help to decrease the damage done by radiation, but no really effective ones have been found so far.
A．it protects him against the harmful rays from spaceB．it provides sufficient light for plant growthC．it supplies the heat necessary for human survivalD．it screens off the falling meteors
点击查看答案
APD 光敏二极管的（）
A.灵敏度高，噪声小
B.灵敏度高，噪声大
C.灵敏度低，噪声小
D.灵敏度低，噪声大
点击查看答案
某制药企业为扩大经营规模，准备将位于W市城区的老工厂迁出。根据当地政府规定，老厂区土地由政府按一定价格收购后，重新开发利用。该企业拟用政府收购老厂区的补偿价格在郊区工业开发区购置土地，建设新的现代化制...经协商，当地政府同意对老厂区按规划用途条件下划拨土地使用权价格的60%给予补偿，该企业最高可以得到的补偿为( )万元。
A．1126.35
B．1186.30
C．1113.17
D．1028.54
点击查看答案
局限于一侧鼻腔的非霍奇金淋巴瘤分期为ⅠE，放射野设计为（）
A.“品”字野照射 B.面颈联合野照射 C.“品”字野+颈部预防 D.“L”型野照射 E.“L”型野+颈部预防
点击查看答案
人社部和央行联合发布的《关于社会保障卡加载金融功能的通知》决定在社保卡上加载金融功能。该卡不仅能让参保人员领取养老金，也能作为银行卡使用。社会保障卡加载金融功能（） ①可以减少流通中的货币量②使社保卡的功能得到拓展和延伸 ③可以提高持卡人的社会保障水平④具有存取、消费、转账、查询等功能
A.①③
B.②④
C.①②
D.③④
点击查看答案
下列叙述中哪条与恩氟烷相符
A．化学名为2-溴-2-氯-1，1，1-三氟乙烷
B．为挥发性液体，易燃、易爆
C．麻醉作用强，起效快，肌肉松弛良好，大部从气体形式从肺中排出，约10%在肝脏代谢
D．为易流动的重质液体，比重大于硫酸
E．遇光、热和湿空气能缓缓分解，通常加入麝香草酚做稳定剂
点击查看答案
对立体作锥化变形时，变形截面不能产生单向变化。
点击查看答案
题目内容
（请给出正确答案）
参考答案
十点题库官方参考答案
（由十点题库聘请的专业题库老师提供的解答）
