混凝土,轻骨料混凝土,砖及石材的强度等级代号分别是()
A.C,MU,MU,CL
B.C,CL,MU,MU
C.CL,M,MU,C
D.M,C,MU,CL
参考答案:B
,Can you tell me over there ?
A. what are you doing ?
B. what to do it
C. what they are doing
D. what they doing
以下程序运行后的输出结果是【 】。 #include<iostream.h> void fun(int x,int y) { x=x+y;y=x-y;x=x-y; cout<< x << "," <<y << " ,";= void main( ) { int x=2,y=3;fun(x,y); cout<< x << "," << y << endl;=