【简答题】Thermoplastic plastics are generally best for which of the following type of service conditions? A) impact B) creep resistance C) chemical exposure D) flammability
【单选题】下列程序的运行结果是( )。 #include void main {int s=0,k; for(k=7;k>1;k--) {switch(k) {case 1: case 4: case 7: s++: break; case 2: case 3: case 6:break; case 0: case 5: s+=2: break; }} printf('s=%d',s); }