变压器铬牌上所注的额定电压UN±5%是说明该变压器是()A、有载调压B、三级调压C、无载调压D、变频调压
变压器铬牌上所注的额定电压UN±5%是说明该变压器是()
- A、有载调压
- B、三级调压
- C、无载调压
- D、变频调压
相关考题:
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有以下程序:int sub(int n) { return(n/10+n%10); }main(){ int x, y;scanf("% d", x);y=sub(sub(sub(x)));printf("% d\n", y);}若运行时输入:1234<回车>,程序的输出结果是【 】。
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