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x573a; x8d5b; x57fa; X5E0C; x53f3; x536b; x4f4d; x4e0 a; x5426; x6362; X54C06; X54CD; x8d; 5b; x679c; X4F24; X5371; x5bf9; x4ec1; X54CD; x591a; xff1f;

x7ef4; x7684; x9635; x7591; x62dc; x7684; X5927; x593 1; x8fd9; X5E74; x7684; x7ffc; x4e0d; x901f; x5f; EB; x8986; x9762; XFF0C; x80fd; x7403; x63d0; x91cd; x7684; x653b; x529b; x4ed6; x53d7; x8feb; X5B54; x5c3c; X7528; x96f7; XFF0C; x5728; x4e00; x6bd4; x4e2d; x73b0; X77CD 5; x76f4; X5BFC; x4e86; x7403; x5982; XFF0C; x96f7; X5927; x7387; X7EE7; x51fa; x5728; x540e; x4f4d; XFF0C; x8fd9; x8ba9; x8ff7; x4e86; x628a; x3002;

x65f6; X5F17; x5821; x8d5b; x7684; x573a; x73b0; x4e0 d; x4eec; X7528; x51fb; x4f4f; 1a; x5982; x62dc; x5de6; x9632; x4f9d; x6f0f; x767e; XFF0C; X53EF; x4f1a; x5bf9; x6293; x673a; X5077; X5F97; x3002;

x5728;x653b;xff0c;x75c5;x5f71;x540c;x5b58;x3002;

x7ba1;x897f;x62c9;x8428;x72b6;x4e0d;xff0c;x4ed6;x9700;x66f4;x7684;x63f4;x5c24;x 662f;x9762;x5f17;x5821;x96c6;x5b88;xff0c;x5c11;x8def;x5ea6;x51b2;x53ef;x4f1a;x62 直流； x9677； x8fdb； x4e4f； x7684； x9762; x76ee； x6765； xff0c; x573a； x8d5b; x62dc； x800c； f;x573a;x987b;x4e0b;x80dc;xff0c;x5219;x8d5b;x9996;x4f4d;

x6d88;x662f;x5e15;x5c3c;x548c;x57c3;x7136;x6982;x66ff;xff0c;x4ed6;x7684;x51fa;x62 直流； x7684； x573a； x6dfb; x4e00; x7684； x5ea6; x800c； x5fc3; x5c42； xff0c; x4ec1; x52bf;x8fc7;x6b21;x7532;x950b;x5f17;x5821;x6ca1;x8fc7;x4ec1;x518d;x4e0a;x8d56;x67 00; x5206； x7684； x5b88； x70b9; x62dc； x53ea； x7a33； x9635; xff0c;

x7684;x665a;x6bd4;x5bf9;x4ec1;x8bf4;x662f;x6218;x4e5f; x5e0c; x5230； x540e； xff0c; x4e00; x53cc； x5251； x65e2； x80fd； x4e3a; x961f； x5229； x5173； x53ef;x8ba9;x573a;x5165;x4e71;x800c;x8d56;x867d;x5b9e;x4e0d;x62dc;xff0c;x5982;x62dc; x7ee7;x66b4;x51fa;x5b88;x7684;x9898;x8c01;x65e0;x4fdd;x80dc;x4e00;x5c5e;x4ed6;x3002;

x8d5b;x679c;x4f55;x8fd8;x770b;x5e15;x7684;x672f;x6392;x53ca;x5458;x7684;x573a;x6325;x6700;xff0c; x8ff7; x53ea； x8981； x4e0b； xff0c; x5907; x74dc； x548c； x6599； x4e00; x671f； x8fd9;

(x8d23;x660e;x6587;x63cf;x8fc7;x3001;x7247;x6765;x4e8e;x7edc;x6b64;x7ae0;x 5728;x5bfc;x4f1a;x80fd;xff0c;x4f4e;x7b49;x826f;x5bfc;x5982;x53ca;x6743;x80 05;x7269;x6743;x9898;x8bf7;x65f6;x7cfb;x4eec;x6211;x5c06;x4e00;x95f4;x9664 ;x5bb9;x5982;x4e8b;x5b58;x90e8;xff0c;x7cfb;x5373;x5220;x6216;x51fa;x6539;

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