热门试题:
[单选题]某电影院位于高层民用建筑五层,观众厅建筑面积不宜大于( )平方米。
A.150
B.250
C.350
D.400
[单选题]在PN结的P区加反向电压,N区加正向电压,那么PN结处于()偏置。
A.正向
B.反向
C.击
D.饱和
[简答题]扎哈泉地区致密油储层地质条件不同于国内外其他地区,表现出致密储层与低渗储层并存,储层岩石矿物复杂多样,主要由砂岩、碳酸盐岩和黏土三者混积而成,具高泥高钙多薄层的特征。
[单项选择]空中紧急医疗指飞行中的航空器上发现有疑似或确认的检疫传染病需进行紧急()的情况。
A. 隔离
B. 治疗
C. 抢救
D. 输血
[单选题]( )是指委托人(或申请人)与信用社约定,信用社以保函的形式向受益人(或债权人)出具保证,当委托人对受益人不能按照合同规定履行其责任义务时,信用社按约定代为赔偿的业务。
A.保函业务
B.保证业务
C.承诺业务
D.信用业务
[单项选择]急性硬膜下血肿的不典型表现为()。
A. 血肿同侧脑室增大
B. 均匀高密度
C. 广泛脑水肿
D. 可跨越颅缝
E. 中线结构移位
[单项选择]城镇街坊外围界址点及街坊内界址点位中误差在±5cm,点位允许误差为( )。
A. ±10cm
B. ±5cm
C. ±15cm
D. ±7.5cm
[单选题]中高速柴油机所用柴油的十六烷值一般在( )之间。
A.45~60
B.35~60
C.55~60
D.45~70
[单选题]电缆两芯或三芯之间发生绝缘击穿的故障,称为( )故障。
A.断线
B.闪络
C.接地
D.短路
[单项选择]若迈克耳逊干涉仪的反射镜M2平移距离为0.3220mm时,测得某单色光的干涉条纹移过1024条,则该单色的波长为()。
A. 6.289×10-7m
B. 5×10-7m
C. 4×10-7m
D. 7×10-7m
[单项选择]`
A. Litter.
B. Water pollution.
C. Air pollution.
D. Noise pollution.
[单选题]下列选项中,不属于安全技术防范系统局域网系统层次结构的是()。
A.局域网络层
B.现场总线层
C.协议层
D.数据链路层
[单选题] 程序段G02X10.Y10.R-10.F100.;所加工圆弧的圆心角是( )。
A. 180°<圆心角<360°
B. 0°<圆心角<180°
C. 0°<圆心角≤180°
D. 0°≤圆心角≤180°(
[单项选择]做胃镜检查可引起的并发症如心跳骤停、心肌梗死等,其原因是()
A. 插镜刺激迷走神经及低氧血症所致
B. 操作粗暴、穿孔所致
C. 患者本身有胃内感染
D. 患者紧张不配合
E. 食管静脉曲张所致
[单选题]木材在超过550℃时发烟量只有400℃的()。
A.、1/4
B.、2倍
C.、3倍
D.、4倍
[单项选择]血栓脱落随血流至远处
A. 白色血栓
B. 混合血栓
C. 红色血栓
D. 透明血栓
E. 血栓栓塞
[单选题]反洗钱风险控制体系要全面覆盖各项金融产品或金融服务。以下哪个说法是错误的( )
A.金融机构应从全流程管理的角度对各项金融业务进行系统性的洗钱风险评估
B.金融机构应按照风险为本的原则,强化风险较高领域的反洗钱合规管理措施
C.金融机构在研发创新型金融产品过程中,应进行洗钱风险评估,并书面记录风险评估情况
D.金融机构在研发创新型金融产品过程中,应进行洗钱风险评估,可以不记录风险评估情况
[判断题]每列车设一套空调集控装置。控制装置采用微机控制,具有自诊断功能和空调机组分时启动功能。
A.正确
B.错误
[简答题]救援列车停留线,原则上应设在两端接通、便于救援列车出动的段管线(站线)上。
[单选题] 办理大量的货物列车解体和编组作业的车站是
( ) 。
A. 中间站
B. 区段站
C. 编组站
D. 客运站
[多选题]CR400AF(-A)动车组二级修受电弓检查,降弓状态下,检查气囊表面龟裂或划伤,若发现气囊单个裂纹或划伤满足条件( )应更换。
A.可见内部帘布层
B.横向裂纹大于2mm
C.气囊龟裂深度>1.2mm 且长度>25mm
D.横向裂纹大于20mm
[多选题]肿瘤的实验室检查下列哪些叙述是正确的( )
A. Bence-Jones蛋白阳性提示有多发性骨髓瘤
B. 甲胎蛋白阳性提示有继发性肝癌
C. BRCA-1基因阳性者易患卵巢癌和乳腺癌
D. 酸性磷酶增高可见于前列腺癌
E. 癌胚抗原增高是大肠癌术后复发的指标之一
[判断题]旅客票价里程按旅客乘车的实际径路计算
A.正确
B.错误
[单项选择]The Congress Avenue bridge in the city of Austin, Texas, is home to 1.5 million Mexican freetail bats for a period of six months in the summer, after the bats (62) from their home in Mexico.
A quarter of all mammal species worldwide are bats, and there are 951 species of this strange mammal. The (63) they bring to the world of nature are that they are the important natural (64) of night-flying insects, for example, agricultural pests like the corn ear-worm moth; some bats also eat fish, fruit, frogs and birds. (65) bats are also important elements in rain forest ecosystems (66) they pollinate flowers and (67) seeds for countless trees and shrubs.
Bats include the world’s smallest mammal, the bumblebee bat of Thailand, which weighs only a few grams, (68) the giant flying foxes that live in Indonesia have wingspans of just under two meters.
It is well-known that bats use high-pitched sound
A. condition
B. location
C. territory
D. space
[判断题]铁运(1999)103号 《铁路电力安全工作规程》规定:使用吊车立、撤电杆时,钢丝绳套应吊在电杆的适当位置,防止电杆突然倾倒。
A.正确
B.错误
[不定项选择题]共用题干
Ecosystem
1. The word “ecosystem” is short for ecological(生态的)system. An ecosystem is where living creatures expand within a given area. You can say that an ecosystem is the natural environment where biological organisms(生物)such as plants,animals and humans co-exist in this world. So naturally that includes you and me. Yes,we are all members of an ecosystem!
2 .There are different kinds of ecosystems depending on the type of surface or environ-ment. Most are naturally made such as the ocean or lake and the desert or rainforest.Some are man-made or artificial to encourage co-habitation(同居)between living and non-living things in a monitored environment,such as a zoo or garden.
3 .Plants make up the biggest group of biological creatures within an ecosystem,and that's because they are the natural food producers for everyone. Plants raised in the earth need air and collect sunlight to help them grow. When they grow,the plants and its fruits or flowers eventually become a source of food to animals,microorganisms(微生物)and even hu- mans,of course. Food is then converted to energy for the rest of us to function,and this hap-pens in a never-ending cycle until the living creatures die and break up back in the earth.
4 .Ecosystems are the basis of survival for all living things.We depend on plants and ani-mals for food. In order for us to exist,we need to grow and care about other organisms. We also need to care for the non-living things within our environment like our air and water so we can continue living as a population. Since plants,animals and humans are all of various species(物种),we all play a role in maintaining the ecosystem.
5 .To preserve our ecosystems,we should stop using too much energy,which happens when we consume more than our share of resources. Humans should not disturb the natural habitat(栖息地)of plants and animals,and allow them to grow healthily for the cycle to con-tinue. Too many people in a habitat can mean displacement(搬迁): imagine being thrown out of your home because there is no more space for everyone. Worse,overpopulation can also ru- in the environment and cause destruction of existing plants and animals.
To protect our ecosystems we should not use more than______.
A.our share of resources
B.a biological creature
C.a given area
D.the maintenance of the ecosystem
E.the source of food
F.various species
[单选题]3.198.第198题
绝缘中含有微量的水,会引发绝缘体中形成水树枝,造成绝缘破坏。
A.正确
B.错误
[判断题]《集团公司时速160公里动力集中动车组客运组织管理办法》中,动集动车组停靠高站台办客时,车门口摆放安全踏板,设置安全警示带。
A.正确
B.错误
[单项选择]She()English in our university since she came to Wuhan.
A. taught
B. has been taught
C. has been teaching
D. is teaching
[多选题]完全预混式燃烧器由()等构成。
A.引射部分
B.烟气处理
C.燃烧器头部
D.火道
[单选题]党和国家的一切工作的出发点和归宿是:( )
A.发展社会主义社会的生产力
B.增强社会主义国家的综合国力
C.巩固和发展社会主义制度
D.实现最广大人民的根本利益
[单项选择]微型计算机中,控制器的基本功能是______。
A. 实现算术运算和逻辑运算
B. 存储各种控制信息
C. 保持各种控制状态
D. 控制机器各个部件协调一致地工作
[单选题]非手术治疗单纯性下肢静脉曲张的
主要方法是
A.使用弹力绷带或穿弹力袜
B.抬高患肢
C.注意休息
D.避免久站
E.增加心功能
[单选题]用于治疗尿崩症的利尿药是( )
A. 呋塞米
B. 乙酰唑胺
C. 螺内酯
D. 氢氯噻嗪
E. 甘露醇
[单项选择]有人说,学文言文对学生作文有帮助,不但没有坏影响,不会“不文不白”,倒大有好处;点缀一点文言词语,套用一些文言句法,很有滋味,听口气,大有非此不可的味道,虽然没有说得这样明白。当然,我不否认学习文言文在一定程度上对白话文的写作有帮助,帮助表现在两个方面:篇章和语言,这也可以说是对现代作家的一种批评。为什么这些不能从现代作品中学到,还要到老祖宗那儿去讨救兵呢
下面对文段中画横线句子的意思理解正确的一项是( )。
A. 现代作家应该受到批评,因为他们滥片j文言词语,影响不好
B. 现代作品在篇章和语言方面未经时间的筛选,不如古代作品
C. 学习写白话文而必须求助文言文,说明某些现代作品的不足
D. 白话文没有滋味,虽然没有明说,实际上是对他们的一种批评
[单选题]一体化协同的运输交易价格,以现行运输价格为基础,在上浮不超过( )、下浮不低于运输企业的单位变动成本范围内,实行联合浮动。
A.5%
B.20%
C.15%
D.10%
[单选题]代理国库集中支付资金清算,应遵循()的原则,确保零余额辅助账户每日余额为零。
A.先支付、后清算
B.先清算、后支付