热门试题:
[判断题]20世纪80年代，各国的科技政策的突出特征是商业导向，强调工业创新和技术预测或预见。
[单选题]关于含氮激素分泌细胞的超微结构特点,下列说法错误的是（1.0）
A. 与蛋白质分泌细胞相似
B. 含有丰富的粗面内质网
C. 含发达的高尔基复合体
D. 含有膜包被的分泌颗粒
E. 含大量管状嵴线粒体
[单项选择]该病首选方药：
A. 归脾汤加减
B. 左归丸加减
C. 通窍活血汤加减
D. 半夏白术天麻汤加减
E. 以上都不是
[单选题]电动吊篮电源电压偏离额定值不大于( )能正常工作。
A.±10%
B.±5%
C.±8%
[单选题]
语音通信交换系统与外线电话之间是通过哪种接口板
进行连接的?（）。
A.电话接口板
B.无线电接口板
C.席位处理器板
D.中央处理器板
[不定项选择题]共用题干
B1i'k Holes
1 Black holes can be best described as a sort of vacuum,sucking up everything in space. Scientists
have discovered that black holes come from an explosion of huge stars. Stars that are near death can no longer
burn due to loss of fuel , and because its temperature can no longer control the gravitational（重力的）force,
hydrogen ends up putting pressure onto the star' s surface until it suddenly explodes then collapses.
2 Black holes come from stars that are made of hydrogen,other gases and a few metals. When these
explode it can turn into a stellar-mass ( 恒星质量）black hole , which can only occur if the star is large enough
(should be bigger than the sun) for the explosion to break it into pieces,and the gravity starts to compact
every piece into the tiniest particle. Try to see and compare:if a star that' s ten times the size of the sun ends
up being a black hole that' s no longer than 70 kilometers ,then the Earth would become a black hole that' s
only"fraction of an inch!
3 Objects that get sucked in a black hie will always remain there,never to brsak fren. But remember
that black holes can only gobble up（吞噬）objects within a specific distance to it It' s possible for a large
star near the sun to become a black hole,but the sun will continue to stay in place. Orbits (轨道）do not
change because the newly formed black hole, contains exactly the same amount of mass as when it was a star,
only this time its mass is totally contracted that it can end up as on biggeer tnan a state.
4 So far, astronomers have figured out that black holes exist because of Albert Einstenin's theory of
relativity. In the end,through numerous studies ,they have discovered that black holes truly exist. Since black
holes trap light and do not give off light,it is nearly impossible to detect black goles via a telescope. But
astronomers continue to study galaxies (银河系）,space and the solar system to understand how black holes
misht evolve. It is possible that black holes can exist for millions of years,and later contribute to a bigger
process in galaxies ,which can eventually lead to creation of new entities（实体）.Scientists also credit black
holes as helpful in learning how galaxies began to form.
Paragraph 3_____________
A.What Happens to the Objects Around a Black Hole?
B.Is There Proof That Black Holes Really Exist?
C.How Were Black Holes Named?
D.What Are Different Types of Black Holes?
E.What Are Black Holes Made of?
F.How Are Black Holes Formed?
[单项选择]相对其他参与方的管理来说，银行对工程项目最直接的管理内容是比较单一的，主要是对项目( )的控制。
A. 资金支出
B. 信贷流程
C. 资金风险
D. 资金投入
[判断题]不应采用蓄光型指示标志替代消防应急标志灯具。
A.正确
B.错误
[多项选择]根据《税收征收管理法》规定，税务机关采取税收保全措施有着严格的适用条件。下列几种情况哪些属于税务机关采取税收保全措施必须满足的条件
A. 税务机关有根据认为纳税人有逃避纳税义务行为的
B. 纳税人不能提供纳税担保的
C. 必须经县级以上税务局(分局)局长批准
D. 扣押、查封物品的价值，须与纳税人应履行的纳税义务相当
[单项选择]人对疾病的心理反应中，会影响病人对疾病的态度，甚至产生潜在的暴力行为的情绪是（ ）。
A. 卑微和孤独
B. 羞耻和罪恶
C. 否认和怀疑
D. 退化和依赖
E. 退缩和抑郁
[多项选择]某日3时40分，孙某驾驶大客车(乘载54人、核载55人)行至随岳高速公路229公里加300米处，在停车下客过程中，被后方驶来李某驾驶的重型半挂机动车追尾，造成26人死亡，29人受伤。事后查明，李某从昨日18时许出发，途中一直未休息。双方驾驶人的主要违法行为是什么
A. 孙某违法停车下客
B. 孙某客车超员
C. 李某超速
D. 李某疲劳驾驶
[判断题]GDP是衡量一国整体经济状况的主要指标。( )
[单项选择]（）是所有工程施工准备工作的重要一环。
A. 进度计划
B. 图纸会审
C. 工作计划
D. 作业分工
[单选题]消防产品必须符合国家标准;没有国家标准的,必须符合( )。
A.地方标准
B. 部门规章
C. 行业标准
D. 地方性法规
[多选题]经外周静脉输注抗肿瘤药物发疱剂时有哪些注意事项？
A.评估周围血管给药的利弊，充分告知患者并记录
B.选择新的注射部位，给药前2名护士共同确认回血
C.外周静脉给药不应使用输液泵，输注时间不超过60分钟
D.输液部位任何疼痛、发热、感觉变化等需立即报告
E.如发现或疑似外渗，应立即停止输液，另选注射部位
[多选题]安全工器具使用前，应检查确认（）等现象。对其绝缘部分的外观有疑问时应经绝缘试验合格后方可使用。
A.无绝缘层脱落、无严重伤痕等现象
B.固定连接部分无松动、无锈蚀等现象
C.绝缘部分无裂纹、无老化等现象
D.固定连接部分无断裂等现象
[单选题]普萘洛尔不能应用于
A.高血压伴心绞痛
B.高血压伴窦性心动过速
C.高血压伴房室传导阻滞
D.高血压伴肾素活性增高
E.高血压伴脑血管疾病
[判断题]在一次设备运行而停用部分保护进行工作时，应特别注意不经连接片的跳合闸线及与运行设备安全有关的连线。
[单项选择]对关系数据库来讲，下面________说法是错误的。
A. 每一列的分量是同一种类型数据，来自同一个域
B. 不同列的数据可以出自同一个域
C. 行的顺序可以任意交换，但列的顺序不能任意交换
D. 关系中的任意两个元组不能完全相同
[单项选择]《中国药典》2010年版一部规定，水蜜丸的溶散时限为（）
A. 15分钟
B. 30分钟
C. 45分钟
D. 60分钟
E. 120分钟
[单项选择]既是腑会穴，又是胃之募穴的是
A. 足三里
B. 胃俞
C. 中脘
D. 上巨虚
E. 天枢
[单项选择]"This is a really exciting time—a new era is starting," says Peter Bazalgette, the chief creative officer of Endemol, the television company behind "Big Brother" and other popular shows. He is referring to the upsurge of interest in mobile television, a nascent industry at the intersection of telecoms and media which offers new opportunities to device-makers, content producers and mobile- network operators. And he is far from alone in his enthusiasm.
Already, many mobile operators offer a selection of television channels or individual shows, which are " streamed" across their third-generation (3G) networks. In South Korea, television is also sent to mobile phones via satellite and terrestrial broadcast networks, which is far more efficient than sending video across mobile networks; similar broadcasts will begin in Japan in April. In Europe, the Italian arm of 3, a mobile operator, recently acquired Canale 7, a television channel, with a view to launching mobile-TV broadcas
A. distinctive
B. statutory
C. naive
D. emerging
[单选题]自动化检定系统的可接触到的外部金属部分，（）。
A.A.均应可靠接地
B.B.均应绝缘处理
C.C.不作任何处理
[单项选择]最近，我国已经把醉驾纳入刑法定罪量刑，其罪名是（）。
A. 非法驾驶罪
B. 危险驾驶罪
C. 危害人身安全罪
D. 危害社会安全罪
[判断题]学生卡年检规定：有效期满前由乘客本人持有效证件（身份证、户口薄、学生证或学校开具的证明信等）到车站进行年检，携带以上证件的原件或复印件都可以年检。
A.正确
B.错误
[单选题]旅客列车在折返站停留（ ）小时以内的，原则上职工手机不予返还（确有急事可视情节处理）。
A.2
B.3
C.4
D.5
[判断题]所有进入施工现场的特种作业人员必须持有人员入场证及特殊工种证（）。
A.正确
B.错误
[单选题]电费电子托收,只要有用户的托收户名、正确的帐号，不需要与客户签订电费结算协议。
A.正确
B.错误
[简答题]请简述人工采取商品煤样（原煤、筛选煤）时应遵循哪些基本原则？
[判断题]在管壳换热器中，一般压力高的流体在管内走，以减小壳体的压力和壁厚。
A.正确
B.错误
[单选题]在最小流量和二倍的最小流量之间确定的压力损失叫( )。
A.总压力损失
B.最小压力损失
C.机械压力损失
[单项选择]It seems that the author of the passage ______ what Dr. Coles says in the book The Privileged Ones.
A. knows little about
B. is doubtful about
C. is opposed to
D. agrees with
[单项选择]根据卫生部的标准要求，各类病房物体表面细菌数不得超过
A. 8CFU／cm
B. 9CFU／cm
C. 10CFU／cm
D. 12CFU／cm
E. 14CFU／cm
[单项选择]美托洛尔（）
A. 扩张冠状动脉增加冠状动脉血流
B. 减慢心率，降低血压，减少心肌氧耗量
C. 具有降压作用，并可解除冠状动脉痉挛
D. 抗血小板聚积，防止血栓形成
E. 扩张动静脉，降低心脏前后负荷
[多选题]在建筑材料性质中，属于建筑材料力学性质的有（ ）。
A.硬度和耐磨性
B.密度
C.弹性和塑性
D.脆性和韧性
E.吸水性和吸湿性
