热门试题:
[单选题]AB006 电容的国际单位是( )。
A.韦伯(Wb)
B.库仑(C)
C.法拉(F)
D.亨利(H)
[单选题]变压器过负荷,以下措施无效的是( )。
A.投入备用变压器
B.转移负荷
C.改变系统接线方式
D.调整变压器分接头
[多选题] 2020年的中国,( )等突破性成果不断涌现
A. “天问一号”
B. “嫦娥五号”
C. “奋斗者”号
D. 东方红一号
[单选题]开闭所负荷开关应选用全进口或合资品牌的全封闭()。
A.SF6绝缘负荷开关
B.负荷开关
C.油开关
D.真空断路器
[多选题] 月末返利合同的建立是通过“增加”新建合同,编辑( ),并选择“统计周期”后保存。
A.“名称”
B.“描述”
C.“失效日期”
D.“合同有效期”
[单项选择]以下哪个是主域名?()
A. www.xxx.com
B. xxx.com
C. ks.xx.com
[判断题]对需要加注润滑油的补偿滑轮,应按产品规定的期限加注润滑油,没有规定者至少5年一次。
A.正确
B.错误
[单选题]†年1月1日起,封闭式高速公路收费站出口货车统一按_____收费。( )
A.车(轴)型
B. 车货总质量
C.核定载质量
D.轮胎个数
[单选题]严格按训练科目要求着装,身上()携带打火机、手机、钥匙、手表、笔、刀等与训练无关的坚硬物品。
A.不得
B.可以
C.视情
D.必须
[判断题]锯条规格用锯条两端安装孔之间距离表示,并按锯齿齿距分为粗齿、细齿二种。( )(易)
A.正确
B.错误
[单项选择]Ⅰ期子宫内膜癌选择的手术方式()。
A. 子宫次全切保留双附件
B. 筋膜内子宫切除+双附件切除
C. 次广泛子宫切除+双附件切除
D. 广泛子宫切除+双附件切除
E. 筋膜内子宫切除保留双附件
[单选题]预告色灯信号机(不含遮断信号机的预告信号机)显示一个( )灯光, 表示主体信号机在关闭状态。
A.绿色
B.黄色
C.红色
[单选题]金属堵漏套管的维护保养及注意事项表述错误的是( )。
A.防止破损、可在高温环境存放。
B.泄漏点要在橡皮套的中央处,橡胶皮套的开口处要对准封漏套管一半的中间;
C.堵漏套管在泄露点一侧时,螺丝不能拧紧,推至泄漏点后方可拧紧。
D.防止破损、可在阴凉环境存放。
[单选题]()使用轨道交通安全监控设施,应当保护乘客隐私
A..市规划行政主管部门
B.市人民政府
C.轨道交通经营单位
D.市交通运输行政主管部门
[单选题]关于社会主义核心价值观的表述,正确的是( )
A.富强、民主、文明、和谐涉及社会层面
B.自由、平等、公正、法治涉及公民层面
C.爱国、敬业、诚信、友善涉及国家层面
D.体系了社会主义核心价值体系的丰富内涵和实践要求
[单项选择]治疗湿热下注膏淋的主方为()
A. 八正散
B. 小蓟饮子
C. 龙胆泻肝汤
D. 程氏萆薢分清饮
E. 萆薢分清饮(《丹溪心法》)
[单选题]车站所有票务报表的保管年限为( )年。报表保管期满后由客运处统一处理,严禁私自对票务报表进行注销、销毁。
A.1
B.2
C.3
D.4
[判断题]已经召开了航前准备会的,无需再另行组织、召集航前协同会。( )
A.正确
B.错误
[单选题]下列哪类成分可能腐蚀金属,炮制时尽可能不宜选择金属器械( )
A. 生物碱
B. 有机酸
C. 油脂
D. 鞣质
E. 苷类
[单项选择]关系模式R中的属性全部是主属性,则R的最高范式最高至少是( )。
A. 1NF
B. 2NF
C. BCNF
D. 3NF
[多选题]电缆接头组装图能反映组装工艺标准和施工步骤,它是电力电缆()标准化作业指导书的一部分。
A. 维护
B.验收
C.运行
D.安装
[判断题]数据链路与物理链路的区别在于数据链路除物理链路外,还必须有一些必要的规程来控制数据的传输。因此,数据链路比物理链路多了实现通信规程所需要的硬件和软件。
A.正确
B.错误
[单项选择]孔子的教育思想中与其“贵贱有序”的政治主张相矛盾的是()
A. 因材施教
B. 有教无类
C. 学而不思则罔
D. 知之为知之
[判断题]每次货物线、专用线、段管线作业(含防溜补强作业)结束返回前,车站作业人员与货物线、专用线、段管线指定人员在《防溜交接簿》内办理防溜互签。
A.正确
B.错误
[单选题]业务训练扎实,要求实战化训练落实,训练综合成绩达到()以上。
A.良好
B.优秀
C.及格
D.合格
[不定项选择题]共用题干
第一篇
Cell Phones: Hang Up or Keep Talking?
Millions of people are using cell phones today.In many places it is actually considered unusual not to
use one.In many countries,cell phones are very popular with young people.They find that the phones are
more than a means of communication一having a mobile phone shows that they are cool and connected.
The explosions around the world in mobile phone use make some health professionals worried.Some
doctors are concerned that in the future many people may suffer health problems from the use of mobile
phones.In England,there has been a serious debate about this issue.Mobile phone companies are worried
about the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your
health.
On the other hand,why do some medical studies show changes in the brain cells of some people who use
mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning
(扫描)equipment. In one case , a traveling salesman had to, retire at a young age because of serious memory
loss.He couldn't remember even simple tasks.He would often forget the name of his own son.This man
used to talk on his mobile phone for about six hours a day,every day of his working week,for a couple of
years.His family doctor blamed his mobile phone use,but his employer's doctor didn't agree.
What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines
can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is
some radiation,but they say the amount is too small to worry about.
As the discussion about their safety continues,it appears that it's best to use mobile phones less often.
Use your regular phone if you want to talk for a long time.Use your mobile phone only when you really need
it. Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones
may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile
phone too often.
The word"detected"in Paragraph 3 could be best replaced by______________.
A.cured
B.removed
C.caused
D.discovered
[判断题]根据《民用航空安全检查工作手册》第225条,民航安检工作质量控制活动由民航安检质量监察岗位人员负责具体实施。民航安检质量监察岗位人员的选拔、培训要符合《民用航空安全检查工作手册》和民航局民航安检质量控制工作相关规定,以保证质量控制活动有效开展。
A.正确
B.错误
[单选题]4、行政法规的签署及公布部门为()。
A.国务院总理
B.全国人民代表大会
C.国务院
D.国务院法制办
[填空题]As suburbs grew, business moved into the new areas. Large
shopping centers containing a great kind of stores changed consumer (1) ______
patterns. The number of these centers rose from eight in the (2) ______
end of World Warn to 3,840 in 1960. With easy parking and
convenience evening hours, customers could avoid city shopping (3) ______
entirely. New highways created a better access to the suburbs and (4) ______
its shops. The Highway Act of 1956 provided $ 26,000 million,
the largest public work expenditure in US history; to build (5) ______
more than 64,000 kilometers of federal roads to link together all
parts of the country.
Television, in addition, had a powerful impact in social (6) ______
and economic patterns. Developing in the 1930s, it was not widely (7) ______
marketed until after the war. In 1946 the country had about (8) ______
fewer than 17,000 TV sets. Three years la
[多项选择]以下的情况中,属于税务代理关系变更情况的有( )。
A. 甲企业与公平税务师事务所签订的代理协议,由单项代理改为全面代理
B. 乙企业与公平税务师事务所签订了代理协议后,企业的财务主管人员变更
C. 丙企业与公平税务师事务所签订了财产损失鉴证报告的代理协议后,由于客观情况发生变化,导致协议的时间延长
D. 丁企业与公平税务师事务所签订了代理协议后,公平税务师事务所负责该代理业务的代理人进行了变更
[判断题](27854)( )韶山7型电力机车所有转向架的结构完全相同。(1.0分)
A.正确
B.错误
[单项选择]停电操作时,高压应先拉(),后拉隔离开关。
A. 隔离开关;
B. 断路器;
C. 闸刀开关;
D. 磁力启动器。
[单项选择]患者男,50岁。夜间上腹烧灼痛发作2月余,进食或服用阿托品后迅速缓解,诊断为十二指肠溃疡,进食后疼痛缓解的机制是()
A. 交感神经兴奋
B. 胃酸被中和
C. 胃酸增多
D. 平滑肌松弛
E. 迷走神经张力增加
[单项选择]某二叉树中有11个度为2的结点,则该二叉树中的叶子结点数为()。
A. n+1
B. n-1
C. 2n
D. n/2
[单选题]在换热器的操作中,不需做的是()。
A.投产时,先预热,后加热
B.定期更换两流体的流动途径
C.定期分析流体的成分,以确定有无内漏D,定期排放不凝性气体,定期清洗