Costs for regulation of business actually are a hidden tax severely reducing the competitiveness of domestic businesses ______ when they face an increasingly global marketplace.
A.
at times
B.
at present
C.
at once
D.
at a time
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【单选题】有以下程序 main( ) { int k=5,n=0 do { switch(k) { case 1: case 3:n+=1k--break default:n=0k-- case 2: case 4:n+=2k--break } printf('%d',n) }while(k>0&&n<5) } 程序运行后的输出结果是
【单选题】有以下程序 main() { int k=5,n=0; do { switch(k) { case 1: case 3:n+=1;k--;break; default:n=0;k--; case 2: case 4:n+=2;k--;break; } printf('%d',n); }while(k>0&&n<5); } 程序运行后的输出结果是