问题
问答题 简答题
叙述PLC的硬件构成。
答案
参考答案：
（1）中央控制单元；
（2）存储器；
（3）输入输出单元；
（4）输入输出扩展接口，外部设备接口。
（5）电源等。
搜题请搜索小程序“爱下问搜题”
叙述PLC的硬件构成。
参考答案：
（1）中央控制单元；
（2）存储器；
（3）输入输出单元；
（4）输入输出扩展接口，外部设备接口。
（5）电源等。
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| I was shopping in the supermarket when I heard the young voice. "Mom, come here! There's this lady here like my 1 !" The mother rushed to her son; then she turned to me to 2 . I smiled and told her: "It's okay." Then I talked to the boy, "Hi, I'm Darry Kramer. How are you?" He 3 me from head to toe, and asked: "Are you a little 4 ? "Yes, I have a son," I answered. "Why are you so little?" he asked. "It's the way I was 5 ," I said. "Some people are little. Some are tall. I'm just not going to grow any bigger." After I answered his other questions, I shook the boy's hand, and left. My life as a little person is filled with 6 like that. I enjoy talking to children and explaining why I look different from their parents. It takes only one glance to see my 7 . I stand 114 cm tall. I was born a dwarf (侏儒). 8 this, I did all the things other kids did when I was growing up. I didn't 9 how short I was until I started school. Some kids laughed at me. Then I began to 10 30 the first day of school each year. New students would always stare at me as I 11 to climb the school bus stairs. But I learned to smile and 12 the fact that I was going to be 13 my whole life. I decided to make my uniqueness an advantage rather than a disadvantage. What I lacked in height, I 14 in personality. I'm 47 now, and the stares have not 15 as I've grown older. People are 16 when they see me driving. I try to keep a good attitude. When people are 17 , I remind myself: "Look what else I have-a great family, nice friends." It's the children's questions that make my life 18 . I enjoy answering their questions. My 19 is that people will accept various peers (同龄人), whatever size and shape they come in, and treat them with 20 . | ||||
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