【单选题】
PLC控制系统设计的步骤是___。1确定硬件配置,画出硬件接线图2PLC进行模拟调试和现场调试3系统交付前,要根据调试的最终结果整理出完整的技术文件4深入了解控制对象及控制要求
A. 1324
B. 1243
C. 2143
D. 4123
查看试卷,进入试卷练习
微信扫一扫,开始刷题

答案
D
解析
暂无解析
相关试题
【单选题】
以下PLC控制系统设计的步骤描述错误的是___。
A. 正确选择PLC对于保证控制系统的技术和经济性能指标起着重要的作用
B. 深入了解控制对象及控制要求,是PLC控制系统设计的基础
C. 系统交付前,要根据调试的最终结果整理出完整的技术文件
D. PLC进行程序调试时直接进行现场调试即可
【单选题】
以下PLC控制系统设计的步骤描述不正确的是___。
A. PLC的LVO点数要大于实际使用数的两倍
B. PLC程序调试时,进行模拟调试和现场调试
C. 系统交付前,要根据调试的最终结果整理出完整的技术文件
D. 确定硬件配置,画出硬件接线图
【单选题】
以下PLC编程软件安装方法不对的是___。
A. 安装前,请确定下载文件的大小及文件名称
B. 在安装的时候,最好把其他应用程序关掉,包括杀毒软件
C. 安装选项中,选项无需都打勾
D. 解压后,直接点击安装
【单选题】
PLC编程软件安装方法不正确的是___
A. 安装选项中,所有选项要都打勾
B. 先安装通用环境,解压后,进入相应文件夹,点击安装
C. 在安装的时候,最好把其他应用程序关掉,包括杀毒软件
D. 安装前,请确定下载文件的大小及文件名称
【单选题】
PLC编程软件安装方法不正确的是___。
A. 安装前,请确定下载文件的大小及文件名称
B. 安装过程中,每一步都要杀毒
C. 在安装的时候,最好把其他应用程序关掉,包括杀毒软件
D. 先安装通用环境,解压后,进入相应文件夹,点击安装
【单选题】
以下PLC编程软件安装方法不正确的是___。
A. 安装前,请确定下载文件的大小及文件名称
B. 在安装的时候,最好把其他应用程序关掉,包括杀毒软件
C. 安装前,要保证VO接口电路连线正确
D. 先安装通用环境,解压后,进入相应文件夹,点击安装
【单选题】
通过RS585等接口,可将变频器作为从站连接到网络系统中,成为现场总线控制系统的设备。网络主站一般由___等承担。
A. CNC或PLC
B. 变频器或PLC
C. PLC或变频器
D. 外部计算机或变频器
推荐试题
【单选题】
11. —Excuse me, may I use your bicycle? ______ is broken.
—Certainly. But remember to return it before lunch.
A. Mine B. Me C. Myself D. I
A. A
B. B
C. C
D. D
【单选题】
12. —Simon, what do I need to take for the hiking?
—You’d better ________ more water than usual. It’s hot today.
A. to take B. taking C. take D. took
A. A
B. B
C. C
D. D
【单选题】
13. Helen ______ to a language school when she was seven.
A. sent B. is sent C. will send D. was sent
A. A
B. B
C. C
D. D
【单选题】
14. — Is this park you’ve visited recently?
— Yes, it's the most beautiful one I’ve ever visited before.
A. that B. the one C. which D. the one which
A. A
B. B
C. C
D. D
【单选题】
15. — It’s difficult for the village children to cross the river for school.
— I think a bridge ________ over the river.
A. should be built B. is being built C. has been built D. was built
A. A
B. B
C. C
D. D
【单选题】
16. — Could you tell me when Mr. Li ________ in Huaibei?
— Sure..When he ________, I’ll call you.
A. arrives; will arrive B. will arrive; will arrive
C. arrives; arrives D. will arrive; arrives
A. A
B. B
C. C
D. D
【单选题】
) 17.There is ________ 800-metre-long road behind ________ hospital.
A. an; an B. an; the C. a; a D. a; the
A. A
B. B
C. C
D. D
【单选题】
18. — Did you see a girl in yellow pass by just now?
— No, sir. I ________ a magazine.
A. read B. am reading C. was reading D. would read
A. A
B. B
C. C
D. D
【单选题】
19.In fact, my parents are not only kind to me, but also strict ________ me.
A. at B. to C. for D. with
A. A
B. B
C. C
D. D
【单选题】
20. The boy_____ a yellow sweater can_____ himself now.
A. wearing; dress B. putting on; wear C. put on; dress D. dressing; wear
A. A
B. B
C. C
D. D
【单选题】
21. —Jack, I haven’t seen your brother for a long time.
— He ________Shanghai on business for two months.
A. went to B. has gone to C. has been in D. has been to
A. A
B. B
C. C
D. D
【单选题】
22. The meat with eggs tastes ______. Would you like some more?
A. nice B. well C. bad D. wonderfully
A. A
B. B
C. C
D. D
【单选题】
23. — Look! The man standing at the gate ______ be our headmaster.
— No, it _______ be him.He is holding a meeting in the office now.
A. must; can’t B. must; mustn’t C. can’t; can’t D. can’t; mustn’t
A. A
B. B
C. C
D. D
【单选题】
24. The Japanese government must do everything ________ polluted water from running into rivers, lakes, seas and oceans.
A. keep B. kept C. Keeping D. to keep
A. A
B. B
C. C
D. D
【单选题】
25. —Hi, Jack.Did you go to Jim’s birthday party?
—No, I felt so sad.I .
A. didn’t invite B. am not invited C. wasn’t invited D. hadn’t invited
A. A
B. B
C. C
D. D
【单选题】
( ) 26. Where does the writer of "The little Prince" come from?
A.England. B.France. C.America. D.China.
A. A
B. B
C. C
D. D
【单选题】
( ) 27. What does the prince do after the fox tells him a secret?
A.He cares more about a flower and a sheep.
B.He meets many more strange adults on other planets.
C.He realizes his love for the rose and he goes back to his planet.
D.He discovers interesting things such as a snake, other roses and a fox.
A. A
B. B
C. C
D. D
【单选题】
( ) 28. What does "The little Prince" mainly talk about? It' s about _________.
A.the adult world B.the planet B -612
C.a rose and a fox D.the adventure of a young prince
A. A
B. B
C. C
D. D
【单选题】
( ) 29. What is the writer's main purpose(目的)in writing this passage?
A.To tell the readers his life story.
B.To tell people what kind of person his father was.
C.To tell the readers what present he got from his father.
D. To let people know how poor he was.
A. A
B. B
C. C
D. D
【单选题】
( )30 Why did the father not ask his son not to do this and do that?
A.Because he felt quite confident of his son.
B.Because he was born from a poor family.
C.Because he was a man of few words.
D.Because he didn't want to be much too strict with his son.
A. A
B. B
C. C
D. D
【单选题】
( ) 31. What would someone learn from this passage?
A.How to live by oneself. B.How to stand on one's own feet.
C.What a good father should do. D.What the self-important is like.
A. A
B. B
C. C
D. D
【单选题】
( ) 32. What may be the proper Chinese for the underlined part in the passage?
A.闲暇时光 B.学费 C.精神空虚 D.经济不足
A. A
B. B
C. C
D. D
【单选题】
( ) 33. It’s good for children to ________ on the Internet.
A. give password to others
B. go into a chat room as they’d like to
C. give out a credit card number
D. get useful knowledge and information
A. A
B. B
C. C
D. D
【单选题】
( ) 34. The underlined phrase “leak out” in the third paragraph may mean “________.”
A. give away B. give out C. leave out D. put away
A. A
B. B
C. C
D. D
【单选题】
( ) 35.If your parents don’t agree, never ________.
A. read anything on the Internet
B. relax in your free time
C. have a face-to face meeting with anyone you met online
D. treat other people as you’d like to be treated
A. A
B. B
C. C
D. D
【单选题】
( ) 36. This passage is mainly about “________”.
A. Internet Safety Rules B. Surfing on the Internet
C. Information on the Internet D. How to use Computers
A. A
B. B
C. C
D. D
【单选题】
( ) 37. When was canned food invented?
A. In 1870. B. In 1810. C. In 1902. D. In 1926.
A. A
B. B
C. C
D. D
【单选题】
( ) 38. After the trip to the Arctic, Clarence Birdseye invented ____________.
A. canned food B. can openers
C. frozen food D. air conditioning
A. A
B. B
C. C
D. D
【单选题】
( ) 39 Changes in weather _____________ in Willis Carrier's company.
A. helped to keep food B. made rooms comfortable
C. caused health problems D. hurt printing paper
A. A
B. B
C. C
D. D
【单选题】
( ) 40. According to the passage, which of the following may lead to inventions?
A. People's needs. B. Public support.
C. Modern technology. D. Practical suggestions.
A. A
B. B
C. C
D. D
【单选题】
1、下列词语中,读音全都正确的一组是( )
A. 箴(jiān)言 璀璨(càn) 分泌(mì) 饮鸩(jiū)止渴
B. 堵塞(sāi) 憧(chōng)憬 宝藏(cáng) 未雨绸缪(móu)
C. 缜(zhěn)密 省(xǐng)悟 弹劾(hé) 瞠(chēng)目结舌
D. 果脯(fǔ) 处(chù)罚 提(tí)防 草菅(jiān)人命
A. A
B. B
C. C
D. D
【单选题】
、下列词语中加点的字的读音完全相同的一项是( )
A. 缉私 编辑 舟楫 开门揖盗 疾恶如仇
B. 奴婢 裨益 麻痹 惩前毖后 刚愎自用
C. 强劲 颈椎 劲头 泾渭分明 不胫而走
D. 船舷 炫耀 弦乐 头晕目眩 煊赫一时
A. A
B. B
C. C
D. D
【单选题】
下列词语中带括号的字的读音,全都不相同的一组是( )
A.(樟)脑 (章)程 (獐)头鼠目 欲盖弥(彰)
B.(削)皮 (消)耗 形(销)骨立 (逍)遥法外
C.(感)动 呐(喊) (咸)与维新 不胜遗(憾)
D. 官(僚) (撩)拨 青面(獠)牙 星火(燎)原
A. A
B. B
C. C
D. D
【单选题】
下列各组词语中字的读音,全都正确的一项是( )
A. 羞涩(sè) 踱(dù)步 参(cēn)差不齐
B. 袅娜(nà) 煤屑(xiè) 蓊蓊(wěng)郁郁
C. 倩(qiān)影 缕缕(lǚ) 脉脉(mài)含情
D. 独处(chǔ) 颤(chàn)动 酣(hān)然入梦
A. A
B. B
C. C
D. D
【单选题】
下列词语中加点字的读音,全都不相同的一组是( )
A. 苗圃 逮捕 哺育 铺面
B. 侥幸 皎洁 缴纳 蹊跷
C. 仿效 旋转 旖旎 旅行
D. 机械 告诫 押解 拮据
A. A
B. B
C. C
D. D
【单选题】
下列词语中加点的字,读音全都相同的一项是( )
A. 螳臂当车 庇护 凋敝 筚路蓝缕
B. 蒙头转向 牛虻 懵懂 故态复萌
C. 欲盖弥彰 奢靡 静谧 风靡一时
D. 经年累月 蓓蕾 羸弱 光明磊落
A. A
B. B
C. C
D. D
【单选题】
下列各组成语中,有错别字的一项是( )
A. 山青水秀 磨拳擦掌 大声疾呼 苦心孤诣
B. 出类拔萃 防微杜渐 再接再厉 天网恢恢
C. 言简意赅 因地制宜 强弩之末 萍水相逢
D. 永葆青春 变幻莫测 孤注一掷 余勇可贾
A. A
B. B
C. C
D. D
【单选题】
下列各组词语中,没有错别字的一组是( )
A. 渲泄 跌宕 奖掖后人 名列前茅
B. 沉湎 须臾 蛊惑人心 商讨国是
C. 班驳 喝采 姗姗来迟 刚柔相济
D. 肖像 醒悟 精兵减政 绿草如荫
A. A
B. B
C. C
D. D
【单选题】
下列各组词语中,没有错别字的一组是( )
A. 联袂 独当一面 威慑 越俎代庖
B. 枢纽 纷至沓来 桎梏 拾人牙秽
C. 揠仰 过犹不及 滑稽 作茧自缚
D. 敷陈 殉身不恤 桀骜 文过饰非
A. A
B. B
C. C
D. D
【单选题】
下列各组词语中,有错别字的一组是( )
A. 寒暄 轻歌曼舞 缜密 功亏一篑
B. 庇佑 忸怩不安 木讷 仗义执言
C. 跌宕 变本加利 编篡 按部就班
D. 誊写 碑帖临摹 稗官 理屈词穷
A. A
B. B
C. C
D. D