相关试题
【填空题】
和利时DCS控制系统中几种冗余措施为___、___。 I/0模块冗余,网络冗余电源冗余,主控冗余
【填空题】
核辐射仪表中提到的r射线的三个特性:___、___、___。 穿透性,光电效应,散射效应
【填空题】
横河电磁流量计AE14采用高低双频励磁,其中高频励磁具有___的特点,低频励磁具有___的特点。 抗流体噪声干扰,良好的零点稳定性
【填空题】
计数器可分为___、___、___。 增计数器,减计数器,增减计数器
【填空题】
绝对误差等于___。 测量值与真值之差
【填空题】
抗干扰___常用的屏蔽材料有___、___。 铜,铁
【填空题】
控制器算法中,HsCnvt.liB是___的函数库。 模拟量量程转换
【填空题】
雷达分为___和___。 脉冲雷达,调频连续波雷达
【填空题】
雷达天线有___、___、___三种。 杆式___,喇叭式,波导管
【填空题】
雷达物位计安装方式有___、___、___三种方式。 法兰,卡环,螺纹
【填空题】
膜片式压力表主要由___、___、___、___四部分组成。 测量系统,传动系统,指示系统,表壳接头
【填空题】
屏蔽分为___和___两种。 磁场屏蔽,电场屏蔽
【填空题】
热电偶产生热电势的条件是___、___。 两热电极材料相异,两接点温度相异
【填空题】
热电阻的校验方法为:___、___。 纯度校验法,分度值校验法
【填空题】
热电阻温度每升高1度,铂金属导体电阻要增加___欧。 0.38或0.385
【填空题】
熔断器的作用为___,热继电器作用为___。 限流,过载保护
【填空题】
三极管的三种工作状态___、___、___。 饱和,放大,截止意思相近判对
【填空题】
图形组态中常见的动态特性有___、___、___、___,平移,填充,缩放,旋转,曲线,X-Y图等。 变色特性,文字特性,闪烁特性,显示隐藏特性
【填空题】
为防止I/0模块插错,在端子底座上设有___。 防混销
【填空题】
温度测量常用元件有:___、___、___等。 热电阻,热电隅,双金属温度计
【填空题】
涡轮式流量计是一种___式流量计,涡轮流量变送器应___安装。 速度,水平
【填空题】
我厂核辐射料位计由___、___、___、___组成。 放射源,探测器,SC3000微处理器,编程器
【填空题】
我厂用的压力变送器多采用___线制接法。 二
【填空题】
我厂用压力变送器Er07报警代表___。 输出超出上下限
【填空题】
现场控制站的屏蔽地通常有___、___。 信号线屏蔽,DP通讯线屏蔽
【填空题】
写出以下运算符代表的含义:GT___,LT___。 大于,小于
【填空题】
新建工程时,工程名一般要求在___个字符以内。 12
【填空题】
仪表按控制仪表依所用能源的不同,可以将其分为___、___、___和___等。 电动,气动,液动,混合式
【填空题】
仪表测量中的五大参数是___、___、___、___、___。 温度,压力,物位,流量,在线/成分分析
【填空题】
仪表的精度等级是根据引用___来划分的。 误差
【填空题】
应用最广泛的工业核仪表是___、___。 料位计,密度计
【填空题】
用热电偶测量温度时,其连接导线应该使用___。 补偿导线
【填空题】
用于指导安装接线用的图纸是___。 安装接线图
【填空题】
运算过程中对变量的访问包括___、___。 读取变量值,给变量赋值
【填空题】
在DCS网络中,MNET代表___,SNET代表___。 监控网,系统网
【填空题】
在流量测量中,一般都要采用温度补偿和压力补偿,这种补偿修正___误差。 系统
【填空题】
在使用万用表测量电流量,须将万用表___在电路当中,测量电压时,须将万用表___在电路中。 串联,并联
【填空题】
在我厂中,实时信息采集系统中,DCS系统数据采集使用___采集器,煤气站PLC系统数据采集使用的是___采集器。 MACS,OPC
【填空题】
自动调节系统按调节器具有的调节规律来分,通常有___、___、___等调节系统。 比例,比例积分,比例微分
【填空题】
自动调节系统主要由___、___、___和___四大部分组成。 调节器,调节阀,调节对象,变送器
推荐试题
【判断题】
销售净利率是20%,资产周转率是1次,权益乘数是2,则净资产收益率是40%
【判断题】
一般认为,资本保值率越高,表明企业的资本保全状况越好,所有者权益增长越快,债权人的债务越有保障
【判断题】
如果企业的负债资金的利息率低于其资产报酬率,则提高资产负债率可以增加所有者权益报酬率
【判断题】
杜邦分析体系是利用各主要财务比率之间的内在联系,综合分析企业财务状况的方法。建立财务分析指标体系
【判断题】
沃尔比重评分法是将选定的财务比率用线性关系联系起来,并分别给定各自的分数比重,然后通过与标准比重进行比较,确定各项指标的得分及总体指标的累积分数,从而对企业的信用水平做出评价的方法
【填空题】
boost prospect calculate accelerate promote
mystery destruction analysis insight barrier
1 In our class,most discussions and activities take place in assigned small groups,These groups provide a supportive and safe environment that () learning
【填空题】
commence,deserve,tempting, coordinate,
lodge,confess, grant, proceed ,display, consequently
9 As the finance ministry rejected the defor its "lack of clarity",it[ ]complaint with the Europear Commission that this deal was against the law
【填空题】
commence,deserve,tempting, coordinate,
lodge,confess, grant, proceed ,display, consequently
5 State governments and the colleges themselves have [ ] financial help to students with special abilities and those with financial needs
【填空题】
commence,deserve,tempting, coordinate,
lodge,confess, grant, proceed ,display, consequently
10 Dogs cannot distinguish the color of trafficlights, so the master must make the decision of when it is safe to [ ] across the road
【填空题】
commence,deserve,tempting, coordinate,
lodge,confess, grant, proceed ,display, consequently
6 The committee agreed that his papers
[ ] a wider circulation because of their essential and fundamental interest to a larger audience.
【填空题】
prepare for , be bound to , stand up for , in favor of ,speculate about , in the company of, in the form of , be liable to , invest..with , in succession
1 Because women often restrict their diet
In an effort to control weight,they may
Not consume enough iron-rich food and
( ) experience an iron Deficiency.
【填空题】
commence,deserve,tempting, coordinate,
lodge,confess, grant, proceed ,display, consequently
8 Americans defend the right to obtain a gun and they have[ ] been willing to turn a blind eye to the harm that people owning guns have caused
【填空题】
commence,deserve,tempting, coordinate,
lodge,confess, grant, proceed ,display, consequently
7 The anger and frustration [ ] by the local people who do not understand what is happening to them will be a terrible and dangerous force
【填空题】
prepare for , be bound to , stand up for , in favor of ,speculate about , in the company of, in the form of , be liable to , invest..with , in succession
2 Some reform advocates ignore the impact of
Class size on student achievement,and they
are ( ) what they call as a Priority:teacher effectiveness.
【填空题】
prepare for , be bound to , stand up for , in favor of ,speculate about , in the company of, in the form of , be liable to , invest..with , in succession
3 Because of easy access to the Internet,the
New breakthrough tq create something
Truly creative ( ) happen anytime now.
【填空题】
prepare for , be bound to , stand up for , in favor of ,speculate about , in the company of, in the form of , be liable to , invest..with , in succession
4 Indeed,if teachers want to( ) how far students might get in life, a better measurement than grades might be how hard the students try.
【填空题】
prepare for , be bound to , stand up for , in favor of ,speculate about , in the company of, in the form of , be liable to , invest..with , in succession
5 Nature has( ) these animals ( ) a capacity for not showing Fear.
【填空题】
prepare for , be bound to , stand up for , in favor of ,speculate about , in the company of, in the form of , be liable to , invest..with , in succession
6 During the weeks of discussion,delegations
from groups who are interested in the
Resolution may call on representatives to
( ) their point of view.
【填空题】
prepare for , be bound to , stand up for , in favor of ,speculate about , in the company of, in the form of , be liable to , invest..with , in succession
7 Plato was a superb writer,and his works are
Part of the world’s great literature.Most of
His existing work is ( )Dialogs and letters.
【填空题】
prepare for , be bound to , stand up for , in favor of ,speculate about , in the company of, in the form of , be liable to , invest..with , in succession
8 Young people should enter into a broad
Flexible training program,through which
They can learn a lot and be ( ) their future careers.
【填空题】
prepare for , be bound to , stand up for , in favor of ,speculate about , in the company of, in the form of , be liable to , invest..with , in succession
9 The young man is very happy and proud to
be ( ) the old professor because he always feeIs great when talking With him.
【填空题】
prepare for , be bound to , stand up for , in favor of ,speculate about , in the company of, in the form of , be liable to , invest..with , in succession
10 One day they passed more than 20 villages ( ),and some of these are Said to have stretched for six miles or more.
【填空题】
boost prospect calculate accelerate promote
mystery destruction analysis insight barrier
7 Being asingle parent,there is no way for her
to ( ) the time and energy she has
devoted to her children for the past 10 years.
【填空题】
boost prospect calculate accelerate promote
mystery destruction analysis insight barrier
8 It is essential that you start by listening because one of the main ( ) teenagers and their parents face in forming positive relationships is that neither listens to the other.
【填空题】
boost prospect calculate accelerate promote
mystery destruction analysis insight barrier
9 We all know the dangers of an earthquake: the ( ) to buildings,the troubles can be caused by falling trees,and the terror occurs when the earth actually opens uip.
【填空题】
boost prospect calculate accelerate promote
mystery destruction analysis insight barrier
10 Not until recently have we realized that the increasing world population may lead to a potential gloomy ( ) for humanity starvation.
【填空题】
boost prospect calculate accelerate promote
mystery destruction analysis insight barrier
2 It is the development strategy/of the company to ( ) its overseas expansion in order to take a slice of the world market
【填空题】
boost prospect calculate accelerate promote
mystery destruction analysis insight barrier
3 Nearly six million people go to see the Mona
Lisa every year,attracted by the ( )of her smile.When you're not lodking at her, she seems to be smiling;when you look at her,she stops.
【填空题】
Boost prospect calculate accelerate promote
mystery destruction analysis insight barrier
4 To live with a family whose native language is English is the ideal way to further improve one's English and to gain ( )into its culture.
【填空题】
Boost prospect calculate accelerate promote
mystery destruction analysis insight barrier
5 There is a real need to ( ) academic
achievement in schools and help with the
development of a student's overall character.
【填空题】
boost prospect calculate accelerate promote
mystery destruction analysis insight barrier
6 Einstein said his scientific discoveries grew
from his imagination rather than from( ),
reason and language.
【填空题】
commence,deserve,tempting, coordinate,
lodge,confess, grant, proceed ,display, consequently
1 When the police caught up with him, Mr.Foster had to [ ] that he'd broken the speed limit.
【填空题】
commence,deserve,tempting, coordinate,
lodge,confess, grant, proceed ,display, consequently
2 Whenever my boss makes a decision that I don't agree with, I tell him what I really think, though it's [ ] to make him happy by telling him his ideas are always right
【填空题】
commence,deserve,tempting, coordinate,
lodge,confess, grant, proceed ,display, consequently
3 As can be probably perceived, a manned tip to Mars may soon[ ] since scientists have achieved the manned moon mlssion
【填空题】
commence,deserve,tempting, coordinate,
lodge,confess, grant, proceed ,display, consequently
4 A number of countries are [ ]their efforts to send out food to the area worst affected by the flood.
【填空题】
immune to , fall in love with , go along with, on one's behalf, be filled with , take the liberty of , expel from , be pessimistic about
She authorizcd her partner to carry out daily responsibllitles [ ]when she was on her business trip
【填空题】
immune to , fall in love with , go along with, on one's behalf, be filled with , take the liberty of , expel from , be pessimistic about
On hering the latest news about your mother's ill health, I [ ]canceling your reservation at the Sheraton.