热门试题:
[单项选择]PQ型显影液中P是指
A. 菲尼酮
B. 米吐尔
C. 邻苯二酚
D. 对苯二酚
E. 对苯二胺
[单项选择]辅助设计是城市规划信息化最为( )的工作，在CAD软件以及GIS分析功能的支撑下，进行城市规划设计工作。
A. 基础性
B. 根本性
C. 重要性
D. 合理性
[单项选择]深龋备洞时，下列哪项措施是错误的
A. 去尽腐质
B. 保护牙髓
C. 洞底平，侧壁平直，两者相互垂直
D. 洞缘线圆钝
E. 尽量保留健康牙体组织
[单选题]采油、采气、集输等各企业按照员工岗位职责和属地范围编制了检查表,岗位员工当班作业前,应按照岗位检查表进行岗位巡回检查,及时整改并汇报发现的问题,岗位安全检查每班不应少于( )。
A.一次
B.二次
C.三次
D.四次
[单选题]遇雷、雨、大风等情况威胁到人员、设备安全时，作业负责人或专责监护人应下令停止作业。（）
A.正确
B.错误
C.略
D.略
E.略
F.略
[判断题]干粉灭火器一经开启使用后,必须进行再充装。( )[判断题]
A.正确
B.错误
[简答题]若流经几个电阻的电流相等，这几个电阻一定串联。
[单项选择]The founder of quantum mechanics (量子力学) and the inventor of the uncertainty principle, Wernet Heisenberg was born in Wurzburg and brought up in Munich, where he entered the university in 1920 to study physics under Arnold Sommeffeld. After a brief stay at Gottingen University, he moved to Copenhagen to pursue research under Niels Boho and remained there until 1927.
After 1913 the quantum theory made considerable progress, but by 1924 it was running out of steam, largely owing to its lack of a coherent and systematic mathematical foundation. In the summer of 1925 Heisenberg discovered the foundation of just such a mechanics. Then his theory was rapidly developed by Max Born, Pascual Jordan, and P. A. M. Dirae.
In the spring of 1927, while a lecture at Boho’s institute, Heisenberg followed up his discovery of the uncertainty relations, which are of central importance in quantum mechanics.
Heisenberg was awarded the Nobel Prize for Physics in 1932 for his contribution to th
A. A magazine.
B. A physics textbook.
C. A physics report.
D. A government document.
[单选题]初孕妇，妊娠36周，血压190/110mmHg，尿蛋白(+++)，下腹及颜面浮肿，今晨起头痛剧烈，伴眼花，呕吐，胎位胎心正常，无宫缩，本例最恰当的紧急处理是（ ）。
A.立即剖腹产
B.催产素静滴引产
C.胎头吸引术
D.人工破膜
E.解痉，镇静，利尿，降低颅内压
[单项选择]When stars like our Sun die, they bloat to become red giants and then eject gigantic clouds of gas and dust into space. Increasingly, however, scientists found themselves at a profound loss to explain how exactly dying stars could blow away these clouds. Now astrophysicists propose that unexpected chemical reactions during the formation of stardust could help solve this mystery.
Stars smaller than the Sun and up to eight times as massive die by swelling up into red giants before shedding most of their mass to shrink into very compact, dying embers (灰烬) called white dwarfs. Two kinds of red giants exist-those with lots of carbon, and others richer in oxygen than in carbon. Carbon-rich stars release carbon particles during their death throes. Scientists proposed these pitch-black grains absorb rays from the dying star and get shot into space by starlight, a theory that fit both the observations and computer models.
Increasingly, however, researchers could not explain how oxygen
A. shed most of its mass to the space and shrink into a dwarf directly.
B. break up into pure water and sand.
C. blow its transparent outermost layer into space by starlight.
D. bloat to a red giant and make carbon from pitch-black dust.
[单项选择]3岁儿身高90cm，体重14kg，牙齿20枚，腕部骨化中心4个，可考虑为（）
A. 佝偻病
B. 肥胖症
C. 营养不良
D. 在正常范围内
E. 身材高大
[单选题]若遇特殊情况需解锁操作，应经设备运维管理部门防误操作装置专责人或( )指定并经公布的人员到现场核实无误并签字。
A.公司
B.调控部门
C.设备运维管理部门
D.设备检修管理部门
[单选题]中国公民钱大壮与日本公民广末凉子结婚，婚后定居南京，并育有一女钱娇娇。依我国《国籍法》，下列哪一选项是正确的?（ ）
A.如钱大壮为南京市检察院检察官，其不得申请退出中国国籍
B.如广末凉子申请中国国籍并获批准，经批准可再保留日本国籍
C.如钱娇娇出生于日本，不具有中国国籍
D.如钱大壮与广末凉子定居于美国，钱娇娇出生后同时取得美国与中国国籍
[单选题]放线、紧线与撤线工作时，人员不准站在或跨在已受力的牵引绳、导线的（）侧和展放的导、地线圈内以及牵引绳或架空线的垂直下方，防止意外跑线时抽伤。
A.外角
B.内角
C.受力
D.牵引
[判断题]入所前，在列车终到站，旅客乘降完毕关闭车门后，司机按随车机械师的通知要求，确认或换升受电弓进行入所作业。
A.正确
B.错误
[单选题]下列哪项指标可作为缺铁的主要依据
A.血清铁
B.血红蛋白
C.血清铁蛋白
D.总铁结合力
E.含铁血黄素
[简答题]某供电公司对一条故障修复后的电缆进行直流耐压试验，未对泄露电流数据进行记录，因未发生击穿便投入运行。试分析该公司试验管理是否正确？
[单选题]与男性膀胱颈相邻的结构是
A.直肠
B.输尿管
C.输卵管末端
D.精囊腺
E.前列腺
[多选题] 提起行政诉讼应当符合哪些条件?( )
A.原告是符合《行政诉讼法》规定的公民、法人或其他组织
B.有明确的被告
C.有具体的诉讼请求和事实根据
D.属于人民法院受案范围和受诉人民法院管辖
[多选题]空调用电根据使用性质不同，有可能执行的电价为()。
A.居民生活电价
B.非居民照明电价
C.农业电价
D.大工业电价
[单选题]当压力因素第一次发生时，身体调动它的生理保护机制，反抗压力因素。这是一种高度活跃状态，反应能量达到了它的活动极限。是指( )。
A.报警反应阶段
B.应激阶段
C.抵抗阶段
D.消耗阶段
[单选题]干粉灭火器的药剂,一般有效期限为( )。
A.2年
B.3年
C.4年
D.5年
[简答题]三相异步电动机的转向是什么因素决定的？如何改变电机转向？
[多项选择]诊断咽异感症包括（ ）
A. 详细了解病史
B. 认真做好各项检查，综合分析
C. 凭咽部检查可明确诊断
D. 咽部检查不能确诊
E. 注意除外隐蔽的咽喉等器质性病变
[填空题]自阀(大闸)施行制动时起,至列车停车或缓解时止,列车所走行的距离叫( )。
[单选题]万用表的转换开关是实现(____)。
A.各种测量种类及量程的开关
B.万用表电流接通的开关
C.接通被测物的测量开关
[单项选择]大多数票据自出票日期起（）内有效。
A. 3个月
B. 4个月
C. 5个月
D. 6个月
[单项选择]预应力压注水泥浆的泌水率最大不超过。（）
A. 2%
B. 4%
C. 5%
D. 6%
[单选题]我们要牢固树立社会主义生态文明观,推动形成______现代化建设新格局,为保护生态环境作出我们这代人的努力!
A.人与自然和谐共生
B.人与环境和谐发展
C.人与自然和谐发展
D.人与环境和谐共生
[单项选择]政治是经济的集中表现，其基本含义是( )。
A. 解决政治问题是解决经济问题的前提
B. 政治活动的最终目的是为了实现统治阶级的根本经济利益
C. 经济关系是随着政治关系的变化而变化的
D. 一切政治活动都是围绕着经济问题而展开的
[单项选择]
Anyone who doubts that children are born with a healthy amount of ambition need spend only a few minutes with a baby eagerly learning to walk or a headstrong toddler starting to talk. No matter how many times the little ones stumble in their initial efforts, most keep on trying, determined to master their amazing new skill. It is only several years later, around the start of middle or junior high school, many psychologists and teachers agree, that a good number of kids seem to lose their natural drive to succeed and end up joining the ranks of underachievers.
It’s not quite that simple. “Kids can be given the opportunities to become passionate about a subject or activity, but they can’t be forced, ” says Jacquelynne Eccles, a psychology professor at the University of Michigan, who led a landmark, 25-year study examining what motivated first grade students in three school districts. Even so, a growing number of educators and psychologists do believe
A. stimulating them to build up self-confidence
B. cultivating the attitude of risk taking
C. enlarging the areas for children to succeed
D. making them understand their family crisis
[单选题]马胎衣排出的正常时间是
A.3.5~4h
B..1.6 〜2h
C.5min-1.5h
D.2.5-3h
E.4.5-5h
[单选题]家里存放汽油，最安全的容器是（ ）
A.木桶
B.塑料桶
C.铁桶
[单项选择]不直接注入下腔静脉的血管是（ ）
A. 肾静脉
B. 门静脉
C. 肝静脉
D. 肾上腺静脉
[单项选择]造血干细胞移植预处理目的：
A. 保护受者免疫系统
B. 抑制受者免疫系统
C. 杀灭受者肿瘤细胞
D. 破坏受者正常造血细胞
[单选题]第一期乳腺癌的肿块直径不超过
A.1cm
B.2cm
C.3cm
D.4cm
E.5cm
[判断题]垃圾、煤灰、杂物在厨房排污口倾倒。
A.正确
B.错误
