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10.FXEN系列可编程序控制器的存储器包括ROM和RAM型。
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11.可编程序控制器的程序由编程器送入处理器中的控制器，可以方便地重读出、检查与修改。
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12.可编程序控制器的工作过程是并行扫描工作过程，其工作过程分为三个阶段。
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13.可编程序控制器的工作过程是周期循环扫描工作过程，其工作过程主要分为三个阶段。
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14.可编程序控制器停止时，扫描工作过程即停止。
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15.可编程序控制器采用的是循环扫描工作方式。
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16.可编程序控制器运行时，一个扫描周期主要包括三个阶段。
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17.高速脉冲输出不属于可编程序控制器的技术参数。
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18.I／O点数、用户存储器类型、容量等都属于可编程程序控制器的技术参数。
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19.FX2N可编程序控制器DC输入型是高电平有效。
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20.FX2N。可编程序控制器DC输入型是低电平有效。
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21.FX2N可编程序控制器有4种输出类型。
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22.FX2N可编程序控制器晶体管输出型可以驱动直流型负载。
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23.可编程序控制器晶体管输出型可驱动动直流型负载。
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24.FX2N-40ER表示F系列扩展单元，输入和输出总点数为40，继电器输出方式。
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25.PLC的选择是PLC控制系统设计的核心内容。
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26.PLC的输入采用光电耦合提高抗干扰能力。
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27.FX2N系列可编程序控制器采用光电耦合器进行输入信号的隔离。
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28.PLC之所以具有较强的抗干扰能力，是因为PLC输入端采用了光电耦合输入方式。
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29.在一个PLC程序中，同一地址号的线圈可以多次使用。
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30.PLC编程时，主程序可以有多个。
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31.PLC编程时，子程序至少要一个。
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32.PLC中辅助继电器定时器计数器的触点可使用多次。
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33.PLC的输入和输出继电器的触点可使用无限次。
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34.PLC梯形图编程时，并联触点多的电路应放在左边。
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35.FX2N PLC共有256个定时器。
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36.对于图示的PLC梯形图，程序中元件安排不合理。
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37.用计算机对PLC进行程序下载时，需要使用配套的通信电缆。
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38.PLC的梯形图是编程语言中最常见的。
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39.PLC编程软件只能对PLC进行编程。
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40.在计算机上对PLC编程，首先要选择PLC型号。
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41.FX编程器在使用双功能键时键盘中都有多个选择键。
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42.PLC编程软件模拟时可以通过时序图仿真模拟
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43.PLC编程软件安装时，先进入相应文件夹，再点击安装。
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44.PLC程序上载时要处于STOP状态。
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45.在做PLC系统设计时，为了降低成本，I/O点数应该正好等于系统计算的点数。
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46.在进行PLC系统设计时，I/O点数的选择应该略大于系统计算的点数。
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47.FX2N系列可编程序控制器梯形图规定元件的地址必须在有效范围内。
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48.FXzN系列可编程序控制器的地址是按八进制编制的。
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49.强电回路的管线尽量避免与可编程序控制器输出、输入回路平行，且线路不在同一根管路内。所有金属外壳(不应带电部分)均应良好接地。
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50.PLC连接时必须注意负载电源的类型和可编程序控制器输入输出的有关技术资料。
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27所谓平行登记是指对所发生的每一项经济业务，一方面要以会计凭证为依据登记有关总分类账，又要以登记好的总分类账户为依据，将其拆分后登记所属的明细分类账
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28原始凭证金额有错误的，应当由出具单位重开，不得在原始凭证上更改。
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同会计科目的分类相对应，账户应分为总分类账户和明细分类账户
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1.My job varies between the extremely tedious and the annoyingly busy. ________ I think I’m happier during the really busy times; no time to think about how bored I am.
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2.It is the nature of the wise _________ pleasures, but the foolish to be a slave to them.
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3.I figure out a good team of dogs, hitched to a light sled, can_________ 1,000 pounds of goods.
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4.In the story ,the little girl has a _________ stepmother, who makes her life a misery.
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5.Nothing ever becomes real till it is experience-even a proverb is no proverb to you till your life _________ it.
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6.Nowadays almost all libraries are finding it increasingly difficult to remain within their _________.
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7.You can increase a tyre’s grip in winter by slightly _________its pressure.
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8.Lake Superior, Huron, Erie, and Ontario are shared by the United States and Canada, and from part of the _________between the two countries.
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9.The police are investigating the three men allegedly _________organizing and carrying out the bank robbery.
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10.I do not doubt in the least that inflation leads to _________decline.
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11.A blizzard _______________great drifts of snow across the lake.
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12.Tim says _________everybody will be affected by the tax increase, but I’m sure he’s exaggerating.
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1.China’s economic success over the past three _________has raised the living standards of hundreds of millions of Chinese citizens.
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2.Citibank picked the chief executive of Etang.com as its first Chinese customer Thursday to open an account at its new branch in the _______Pease Hotel along Shanghai’s fabled waterfront.
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3.The United States last Wednesday _________tariffs关税 of up to 30 percent on a range of foreign steel imports to help protect its domestic国内的industry.
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4.Although he was raised as a Christian, he’s not really very _________.
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5.You can distinguish between frogs ands toads蟾蜍 in the following way: frogs have _________bodies, long limbs, and a smooth skin, and toads have stouter bodies, short limbs, and dry skin.
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6.From the airplane window I could see a _________of city streets.
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7.Aunt Pat smiled at her little niece and _________her to eat.
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8.Dr. Rich Hamilton is planning his own World Wide Web _________on the Internet to provide assistance to anyone who asks for medical help.
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9.It is difficult to estimate the number of people doing part-time jobs _________
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10.The president _________his foreign minister, Mr. Burns, to act as representative to the international conference to be held in Tokyo next month.
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11.Advances in telecommunications have meant that it is just as easy to work from a computer _________at home as it is from a town center office.
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12.Until the new gym is built, you have no option but _________existing buildings which may or may not suit your immediate目前的requirements.
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1.According to some scientists, global warming _________the survival of the whole human race.
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2.The number of visitors from parts of Scotland not including the Edinburgh area was, in fact, relatively small19%, and exceeded the number of overseas visitors16%_________.
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3.The early Spaniards established a chain of mission _________the local population along the San Antonio River.
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4.It was common practice then that when the store owners wanted to go on vacation they simply _________
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5.As they didn’t have relatives or friends there they often _________around nearby malls when they got bored.
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6.To make a birthday card, you can simply cut out some funny or pretty pictures from magazines, _________them _________a piece of card and then write your message inside.
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7.She picked up the receiver and, _________ asking the caller to hold on, went off to tell Jack that he was wanted on the phone.
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8.To relax himself for a little while, he rose from the computer desk, walked across the room towards the window and stretched both arms upwards and _________.
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9.The new product has a pair of small loudspeakers fitted inside, which you can easily _________ your computer’s sound card.
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10.Music in fact is a _________language of a non-verbal nature which is rich in expression.
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11.This _________is designed to show at a glance how many rooms have been rented out and how many are still available.
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12._________ glorious sunshine, the boundless stretch of corn fields looked an impressive sight.
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1.The cook put the meat on a plate, _________it with salt and pepper, wrapped up the plate in aluminum foil铝箔 and then placed it in the oven to roast.
