问题
单项选择题
C级防雷系统防雷空开的作用是（）。
A．防止线路短路着火
B．保护贵重的防雷器
C．雷电一到即断开防雷器
D．防止雷电损坏整流模块
答案
参考答案：A
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C级防雷系统防雷空开的作用是（）。
A．防止线路短路着火
B．保护贵重的防雷器
C．雷电一到即断开防雷器
D．防止雷电损坏整流模块
参考答案：A
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| I devote myself to music because of my grandmother. My mom and I lived with grandparents from the time I was two until I was eight. And even then, I was at their house before and after school every day while my mother was 1 . Grandma loved music. It was she that first 2 me to Elvis Presley as a very young child, and once I heard his music, I was truly in 3 with it. Most five-year-olds ask for 4 for birthdays, but I wanted Elvis' albums. I would play them non-stop and 5 to the music in my grandma's family room though my movements didn't look 6 . Grandma played the piano and 7 me to sing "America the Beautiful" and "Somewhere over the Rainbow". I 8 started playing music on the piano, and soon Grandma was paying for me to take piano lessons from a lady living in the 9 . I would come home from 10 and walk there for my lesson. I 11 took about nine months of lessons, but it was enough to give me a(n) 12 and allow me to continue to teach myself. Last month when I came home to visit Grandma in the hospital, I brought along my guitar with me. She was 13 , but the music seemed to 14 her soul. She had me sing some songs and when I started to sing "Somewhere over the Rainbow", her weakened voice 15 in with mine for a few lines. That experience was one of the most 16 of my lifetime and one I will certainly cherish forever. I told her of my music career and she was very 17 and said, "That's wonderful!" I 18 . to play for her throughout the week I was home. My grandma 19 two days ago. In my opinion, part of her will live on through every 20 I write or sing in my life. | ||||
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