相关试题
【单选题】
涡轮流量计主要由表体、整流器、___、轴承及磁电转换器等组成。
A. 叶轮；
B. 蜗杆；
C. 转子；
D. 涡轮；
【单选题】
双金属温度计是采用___的两种金属片，叠焊在一起而成的螺旋形感温原件。
A. 膨胀系数相同；
B. 没膨胀系数；
C. 膨胀系数不同；
D. 以上都不是；
【单选题】
测量最大压力值不超过4.0MPa时，应选用哪种测量上限值的压力表___。
A. 10.0MPa；
B. 6.0MPa；
C. 4.0MPa；
D. 8.0MPa；
【单选题】
在实际测量中，为了使流量计本身的使用误差尽可能的小，应该使被测流量值在流量计最大流量的___的范围内。
A. 10%--90%；
B. 10%--80%；
C. 20%--100%；
D. 20%--80%；
【单选题】
___是评定计量器具的计量性能的重要指标，是在规定工作条件内，计量器具某些性能随时间保持不变的能力。
A. 准确度；
B. 稳定度；
C. 灵敏度；
D. 精确度；
【单选题】
丹尼尔570气相色谱分析仪的分析周期为___。
A. 120秒；
B. 230秒；
C. 180秒；
D. 240秒；
【单选题】
压缩因子在流量计算机进行计算，执行___。
A. GB/T18603；
B. AGA8号报告；
C. GB/T17747；
D. AGA3号报告；
【单选题】
公司ROC809流量计计算机与超声波流量计的信号传输方式为___。
A. RS422；
B. 以太网；
C. RS485；
D. RS232；
【单选题】
强制检定是指由___以上人民政府计量行政部门指定的法定计量检定机构或授权的计量检定机构对强制的计量器具实行的定期定点检定。
A. 县级；
B. 市级；
C. 地级；
D. 省级；
【单选题】
影响涡轮流量计测量准确度的因素有___。
A. 轴承摩擦力大小和安装结构影响；
B. 气体粘度、密度、压力和温度的变化；
C. 介质脏污和脉动流的影响；
D. 以上全部正确；
【单选题】
作为民用燃料的天然气，___应符合一类气或二类气的技术标准。
A. 甲烷和硫化氢；
B. 总硫和硫化氢；
C. 高位发热量和总硫；
D. 甲烷和含水量；
【单选题】
二类天然气的高位发热量为___。
A. 36MJ/m³；
B. 36.2MJ/m³；
C. 31MJ/m³；
D. 31.4MJ/m³；
【单选题】
目前无线RTU阀室能实现的功能不包括___
A. 阀门远程控制
B. 压力远传
C. 视频监控
D. 可燃气体浓度远传
【单选题】
目前公司场站至调控中心生产数据传输采用___方式的数据通信
A. 无线为主、电信专线为辅
B. 电信专线为主、无线为辅
C. 电信专线为主、管道伴行光缆为辅
D. 管道伴行光缆为主、电信专线为辅
【单选题】
按照公司制度，ESD联锁测试每年测试___次
【单选题】
在站控系统操作画面中进行开、关阀操作，阀不应处在___
A. 远控
B. 无故障
C. 偏差报警
D. 设备投用中
【单选题】
按照公司制度，UPS放电测试每年测试___次
【单选题】
按照公司制度，PLC的主备CPU每___切换一次
【单选题】
按照公司制度，主备通信链路每___测试一次。
【单选题】
按照公司制度，主备生产通信链路每___进行一次测试。
【单选题】
PLC机柜向现场变送器供电电压为___
A. 12V
B. 24V
C. 36V
D. 48V
【单选题】
站控电脑___与外网相连
A. 可以
B. 不可以
C. 根据需要
D. 间歇性
【单选题】
ups内部将市电转化为蓄电池充电的模块为___
A. 整流模块
B. 监控模块
C. 充电模块
D. 逆变模块
【单选题】
停电后，ups内部将蓄电池电能转换为站控供电的模块是___
A. 整流模块
B. 监控模块
C. 充电模块
D. 逆变模块
【单选题】
站控系统ZIC表示___
A. 阀门开命令
B. 阀门开到位
C. 阀门关到位
D. 阀门关命令
【单选题】
站控系统CSO表示___
A. 阀门开命令
B. 阀门开到位
C. 阀门关到位
D. 阀门关命令
【单选题】
站控系统NA表示___
A. 阀门开命令
B. 阀门关到位
C. 就地/远控
D. 阀门故障
【单选题】
具备掉电关功能的气液联动阀必须由机柜常供___电
A. 220V交流
B. 192V直流
C. 24V直流
D. 12V直流
【单选题】
站控主路由器两个端口一处与站内交换机相连，另一处与光通信机柜以太网___相连
【单选题】
通过伴行光缆传输视频会议信号的场站，通过光通信机柜以太网___口传输
【单选题】
进行设备上电之前，首先要对该设备仪表电缆的通断及有无___等情况进行检测
【单选题】
站控路由器的E0/0口与___设备相连，E0/1口与（）设备相连。
A. 本站，本站
B. 本站，调控中心
C. 调控中心，本站
D. 调控中心，调控中心
【单选题】
电动工作调压阀接受的站控系统命令形式为___信号
A. 开关
B. 12V电压
C. 4—20mA电流
D. 脉冲信号
【单选题】
站控系统数据协议转换设备与流量计算机通讯采用的标准是___
A. RS232
B. RS485
C. RS422
D. X.21
【单选题】
从站控电脑上给现场阀门发出开阀命令是一个___信号
【单选题】
目前采用的塔塔里尼、费希尔监控调压阀是采用安全栅将现场三线制___信号转换为两线制（）信号，再通过站控系统显示现场阀位。
A. 电流，电压
B. 电压，电阻
C. 电阻，电压
D. 电阻，电流
【单选题】
场站模拟视频监控通过___传输，数字视频监控通过（）传输。
A. 光缆，同轴电缆
B. 网线，光缆
C. 同轴电缆，光缆
D. 光缆，网线
【单选题】
场站UPS正常工作时市电指示灯___，逆变指示灯（），旁路指示灯，输出指示灯（）。
A. 亮，灭，亮
B. 亮，亮，亮
C. 灭，灭，亮
D. 灭，亮，亮
【单选题】
OSN3500以太网板共有___端口，其中（）口传输生产数据。
A. 8，2
B. 8，1
C. 12，1
D. 16，2
【单选题】
光通信机柜的报警复位按钮在机柜最___端的（）板的中间，报警后要先确定报警原因后轻轻点击进行报警消除。
A. 左，主控板
B. 右，主控板
C. 左，电源板
D. 右，光接口板
推荐试题
【单选题】
Are you feeling better today, Jack?___
A. There must be something wrong.
B. Just have a good rest.
C. Yes, thank you, doctor. But I still don't feel good.
D. Don’t worry about me.
【单选题】
Thank you so much for your lovely gift.___
A. Never mind.
B. I'm glad you like it.
C. Please don't say so.
D. No, It's not so good.
【单选题】
Would you like something to drink? What about a cup of tea?___
A. No, thanks.
B. No, I wouldn’t
C. Yes, I want.
D. Yes, I like.
【单选题】
What's the problem with your bike?___
A. Not at all.
B. Good, thank you.
C. Nothing serious.
D. Sure.
【单选题】
Good morning, John. How are you doing?___
A. I'm pleased
B. Good night.
C. Not so bad. And you?
D. How do you do?
【单选题】
How do you do?___
A. Fine, thank you.
B. How do you do?
C. Not too bad.
D. Very well.
【单选题】
Good-bye for now.___
A. The same to you.
B. That's OK
C. See you.
D. Long time no see.
【单选题】
Hello, how are you?___
A. Hello, how are you?
B. How do you do?
C. Fine, thank you.
D. That's OK.
【单选题】
I didn't mean to do that. Please forgive me。___
A. Not too bad.
B. That's all right
C. It's a pleasure.
D. Thank you.
【单选题】
Thank you for your invitation.___
A. It doesn’t matter.
B. It's a pleasure.
C. It's a small thing.
D. I'll appreciate it.
【单选题】
What a beautiful dress you have on today!___
A. It is suitable for me.
B. No, it isn’t.
C. You want to have one, too?
D. Thank you.
【单选题】
I think he is a good lecturer.___
A. Sorry, it doesn’t matter.
B. So do I.
C. Yes. It's a good idea
D. I don't mind
【单选题】
— What's the matter, dear?___
A. I didn't go to school.
B. I have a terrible headache.
C. I took the kids shopping today.
D. It is a beautiful dress.
【单选题】
Good morning, may I speak to Mark, please?___
A. Who's there?
B. Who's that speaking?
C. Who are you?
D. Who wants to speak to Mark?
【单选题】
Let me introduce myself. I'm Steward.___
A. What a pleasure.
B. Pleased to meet you.
C. I don't know.
D. Thanks a lot.
【单选题】
Let's go to the library this afternoon.___.
A. Yes, that's right.
B. No. I can't.
C. What about you?
D. That's a good idea.
【单选题】
What does Tom's wife do for a living?___.
A. She is a doctor.
B. Tom loves his wife.
C. She has a happy life.
D. She lives far from here.
【单选题】
How tall is your sister?___
A. She is not very well.
B. She is 28 years old.
C. She is very nice.
D. She is as tall as I am.
【单选题】
What do you think of this novel?___
A. I've read it.
B. It's well-written.
C. It was written by my uncle.
D. I bought it yesterday.
【单选题】
How much is this necklace?___
A. It's very nice.
B. It's a birthday present from my parents.
C. It costs fifty pounds.
D. It's a bargain.
【单选题】
How can I get to the cinema?___
A. It's very far.
B. Yes, there is a cinema near here.
C. It's well known.
D. Go down this street and turn left.
【单选题】
What's the matter, John?___
A. I failed my French test
B. It doesn't matter.
C. Nothing's wrong with him.
D. I don't think I can.
【单选题】
What are you majoring in?___
A. In a university.
B. Very hard.
C. Mathematics.
D. At nine in the morning.
【单选题】
Are you going on holiday for a long time?___
A. It was a long time.
B. Two weeks ago.
C. No. Only a couple of days.
D. Not long time ago.
【单选题】
Is Mary there?___
A. Speaking.
B. I'm not Mary.
C. Who are you?
D. Mary is well today.
【单选题】
What day is today?___
A. It's March 6.
B. It's a fine day today.
C. It's March.
D. It's Monday.
【单选题】
Is that seat taken?___
A. Please don't worry.
B. I don't think so.
C. Why not?
D. It's very nice.
【单选题】
Thank you for calling.___
A. Don’t mention it.
B. That's fine.
C. Nice talking to you.
D. Call back again.
【单选题】
How are you getting on today?___
A. Very well.
B. How do you do?
C. I'm a doctor.
D. Nice to have known you.
【单选题】
How's your family?___
A. Thanks all the same.
B. Thanks for calling.
C. Not too bad.
D. Don't mention it.
【单选题】
- How is it that you are late for class again?___
A. Because I missed the bus
B. By bus and then on foot
C. Yes, it is quite wrong
D. It is far from school
【单选题】
- Excuse me. Could you spare me a few minutes? - ___
A. Of course.
B. Of course not.
C. I am sorry to hear that.D.Yes. I'm busy now.
【单选题】
- It's very thoughtful of you to give me a ride. ___
A. It's my pleasure.
B. Take it easy.
C. Sure.
D. Never mind.
【单选题】
- This is heavy! What's in it? ___
A. I think you don't like it.
B. My new computer. I just bought it.
C. I'm glad you're here.
D. Are you really interested in it?
【单选题】
___ I'd like to place an order please.
A. Can I help you?
B. I can help you.
C. What are you doing?
D. Why are you doing?
【单选题】
- Do you know the girl over there?___
A. How can I know?
B. Yes, I remember it now.
C. It's Sam, my teacher's daughter.
D. She is a good girl.
【单选题】
- Shall we go out for dinner tonight?____
A. No, you can't.
B. Yes, please.
C. Thank you, I don't want to.
D. Sorry, I have a report to finish.
【单选题】
- I think the reference book（参考书）is very helpful.____
A. Good idea.
B. So do I.
C. With pleasure.
D. No problem.
【单选题】
- I wish you success in your career.____
A. You are welcome.
B. I think so.
C. Yes, please.
D. The same to you.
【单选题】
- Would you like to come over tonight?____
A. Yes, last night.
B. Yes, over there.
C. Sure, I'd love to.
D. Yeah, I liked it too.
