热门试题:
[单选题]固体可燃物表面温度超过()时,可燃物接触该表面有可能一触即燃。
A.可燃物燃点
B.100℃
C.可燃物闪点
[单选题]当需对高压电器箱、VVVF逆变器进行维护保养时,闭合制动斩波管形成直流支撑电容的快速放电回路,电容通过斩波模块快速放电,放电时间小于( )s。
A.2
B.3
C.1
D.4
[单项选择]确定基准制时,应从结构、工艺和成本几方面综合分析考虑,一般情况下,应优先选用()。
A. 基孔制
B. 基轴制
C. 间隙配合
D. 过盈配合
[单项选择]下列关于盐酸分泌的叙述,哪一项是错误的
A. H+逆着浓度差被分泌至胃内
B. H+的分泌依赖壁细胞膜上H+-K+-ATP酶的作用
C. 合成盐酸所需的C1-来自血浆
D. 盐酸分泌的过程中不需要碳酸酐酶参与
E. 胃酸分泌大量增加时,血浆pH升高
[判断题]一区干球温度对湿球温度没有影响。
A.正确
B.错误
[单选题]利用地形、地物,依托防火墙、防火门、窗和承重构件等设置水枪(炮)阵地,与建(构)筑物保持( ) 。
A.水枪压力
B.用水量
C.射程距离
D.安全距离
[单选题]高分断能力高压熔断器的特点之一是分断()的能力强
A.负荷电流
B.短路电流
C.过负荷电流
[单选题]以票谋私金额( )以上,按《铁路路风管理办法》规定,可定为重大路风事件。
A.2000元
B.3000元
C.4000元
D.5000元
[判断题]信号因故关闭,当故障恢复时,按压进路始端按钮,即可重新开放信号。( )
A.正确
B.错误
[单项选择]A公司向B公司签发并交付一张票据,B公司义向c公司背书转让了该票据,后C公司再次向D公司转让了该票据。经银行审核,A公司的签章不符合规定。对此,下列说法正确的是( )
A. A公司的签章无效,不影响持票人签章的效力
B. A公司的签章无效,但不影响其他真实签章的效力
C. 尽管A公司的签章不符合规定,但其各个背书人背书仍然有效
D. 该票据无效
[单选题]AC400V开关柜小修周期为()
A.3个月
B.6个月
C.1年
D.2年
E.—
[多选题]下列哪些情况不可以发售学生票。( )
A.学校所在地有学生父或母其中一方时
B.学生证未按时办理学校注册的
C.学生往返于院校与实习地时
D.学生探亲访友时
[判断题]全员都要充分认识到通过学习提升思想认识和提高工作技能是每个人的岗位工作职责。
A.正确
B.错误
[多选题]( )、( )、( )、( )应编制专项安全施工方案。
A.重要临时设施
B.重要施工工序
C.特殊作业
D.危险作业
E./
F./
G./
H./
[判断题]根据《建筑施工高处作业安全技术规范》规定,在通道处,严禁使用梯子作业。
A.正确
B.错误
[判断题]高压试验用接地线必须用多股裸铜线或外覆绝缘层的铜质软绞线,其截面积应能满足试验要求,并不得小于16mm2。
A.正确
B.错误
[单项选择]下面正确的赋值语句是()。
A. x=y+3
B. x=y=3
C. x+y=3
D. 3x=y
[单选题]( )不需要在通信各方之间建立独占的通道,数据的发送方会将通信数据划分成很多的数据包,而通信的中转设备有能力根据网络的情况,为各个数据包独立选择发送的路 径。
A.电路交换网络
B.包交换网络
C.电话网络
D.ARPAnet
[单项选择]以下什么属于早期的信息分析()
A. 山雨欲来风满楼
B. 床前明月光
C. 锄禾日当午
D. 春眠不觉晓
[单选题]谐波传动的缺点是( )。( )
A.扭转刚度低
B.传动侧隙小
C.惯量低
D.精度高
[单选题]《煤矿安全规程》第六十七条规定,综采工作面在运送、安装和拆除液压支架时,必须有( )。
A.安全措施
B.隔离措施
C.防护措施
[单选题]按照《恒丰银行会计业务印章管理办法》,休假时间在1-2天的,会计人员应该()。"
A.需将所保管的会计业务印章连同印章钢箱上锁放置于保险柜内,钢箱钥匙须由本人保管,不得携带出我行;
B.需将所保管的会计业务印章连同印章钢箱上锁放置于保险柜内,钢箱钥匙交由会计主管保管;
C.需将所保管的会计业务印章连同印章钢箱上锁放置于保险柜内,钢箱钥匙须封包后交由会计主管保管,钥匙交接需要登记《重要物品保管交接登记簿》;
D.办理印章临时封存手续,登记恒丰银行会计业务印章临时封存登记台账,由原会计业务印章保管人员和会计主管将印章连同钢箱上锁封包入保险柜。钢箱钥匙须封包后交由会计主管保管,钥匙交接需要登记《重要物品保管交接登记簿》。"
[判断题]不准使卸扣处于吊件的转角处。()
A.正确
B.错误
[不定项选择题]共用题干
Flu Shots Or Not?
It sounded like a good idea when New York City's mayor,Rudollph Giuliani,advised New Yorkers recently to get a flu shot.After all,20,000 Americans each year die of influenza. And this year in particular,the mayor suggested,getting a flu shot might be an especially good idea, since it could help doctors distinguish between flu and the deadly inhalational(吸入的)form of anthrax(炭疽).How? Both anthrax and flu exhibit strikingly similar symptoms-fever, chills and muscle aches-in the early days of the infection.Physicians would be quick to suspect anthrax in anyone who was vaccinated(接种疫苗)against flu and still developed fever and chills. That would give them a better chance to identify any new victims of terror while their infection was still in its earliest,most treatable stages.
Or so the mayor's reasoning went. Unfortunately,there are a couple of problems with his log-ic .For one thing,getting vaccinated against influenza doesn't guarantee you won't get sick .Al-though highly effective,the flu vaccine(疫苗)protects against only the dominant types of the dis-ease and even then does not provide 100% protection.It takes a couple of weeks for your body to respond to the vaccine with a sufficient number of antibodies(抗体).Each year thousands of
Americans who get the vaccine nevertheless still get the flu.
There are also plenty of reasons you might develop fever,chills and muscle aches that have nothing to do with either anthrax or flu .Indeed,doctors estimate that more than 80%of all flu-like illnesses each winter are caused by other groups of viruses.Getting vaccinated against flu can't protect you against suffering from these other illnesses.
In the worst case,asking all healthy adults to get vaccinated could actually have the opposite effect to the one intended,leading to even more deaths if it means we run out of shots for those who are most vulnerable to the infection.Already there have been delays in getting this year's shipment of vaccine to clinics and doctor's offices.Those who should be at the front of the line in-clude folks who are 65 or older,nursing-home residents and adults and children with chronic health problems as well as anyone who cares for or lives with such people .Flu shots are also im- portant for men and women whose immune system is weakened by HIV(艾滋病病毒)or other conditions.
The best reason to get the flu vaccine is that it proteets against most flus-not that you're worried about getting anthrax.While inhalational anthrax has killed only five people so far,many more could be at risk from flu-related complications.There's no need to worsen the tragedy by making this year's influenza epidemic any worse.
Some other illnesses may exhibit symptoms similar to those of flu and anthrax.
A.Right
B.Wrong
C.Not mentioned
[单选题]亿豪U型锁(电动) 单位 把 零售价( )
A.6.50
B.14.0
[简答题]按作业相关图法进行生产单位平面布置的原则是什么?
[单项选择]更换增压器后还要做的工作()。
A. 关闭冷却室门
B. 打开曲轴箱盖
C. 打开凸轮轴箱盖
D. 打开稳压箱排污阀
[判断题]在带电设备周围使用钢卷尺、金属梯等禁止使用的工器具,属于行为违章。
A.正确
B.错误
[单项选择]关于青蒿截疟,下列哪项是错误的
A. 抗疟有效成分为青蒿素
B. 对疟原虫的红细胞内期有杀灭作用
C. 用菊科植物青蒿的地上部分
D. 主要影响疟原虫膜结构
E. 有效成分可以透过血脑屏障,因而可用于脑型疟
[单选题]新生儿,胎龄35周,出生时体重2000g。该新生儿分类应属于
A.足月儿
B.足月小样儿
C.正常体重儿
D.低出生体重儿
E.极低出生体重儿
[单项选择]在下列经济行为中,属于货币执行流通手段职能的有
A. 某消费者向水果店以每斤2元的价格预定10斤苹果
B. 某消费者用6元钱购买了3斤苹果
C. 某消费者购买5斤苹果需花费10元钱
D. 某消费者购买5斤苹果,一周后付款10元
[判断题]营地的厕所要尽量远离营地,撤营时应掩埋。( )
A.正确
B.错误
[单选题]甲、乙分别从
A、B两地同时出发赶往8、A两地办事,在两地之间C地相遇.
之后两人继续往前走。办完事后,两人又同时出发返回,在两地之间D地再次相遇。
已知
A、B两地相距11千米,
C、D两地相距3千米,甲的速度快于乙,若两人分别从
A、B同时出发不断往返于两地之间,那么第2次相遇时距离A地多少千米?
A.1千米
B.3千米
C.8千米
D.10千米
[判断题]驼峰计算机控制系统机柜中的各种板、件可以带电拔插。
A.正确
B.错误
[多项选择]就监理单位内部而言,监理规划的主要作用表现在( )。
A. 为承揽监理业务服务
B. 指导项目监理机构全面开展监理工作
C. 作为内部考核的依据
D. 作为业主确认监理单位履行合同的依据
E. 作为内部重要存档资料