Li Ming is __________ a letter now.[ ]
A. write
B. writting
C. writing
D. writeing
答案:C
有如下程序:#includeusing namespace std;class Point{double x,y;public; Point(double xx=0.0,double yy=0.0):x(xx),y(yy){} double getX()const{return x;} double getY()const{return y;} void show()const{cout<<’(’<
新设备及大修后的设备投运前应至少做一次油中溶解气体色谱分析。