常用的灭火剂是哪几种?
参考答案:
水,泡沫,二氧化碳,干粉,卤代烷,惰性气体。
---- Do you know England?
----I’ve heard that he wants to go there for further study.
A.why he will go to
B.why will he go to
C.he why will go to
D.he will why go to
有下列程序: main() {int i,j; for(i=1;i<4;i++) {for(j=i;j<4;j++)printf("%d*%d=%d",i,j,i*j); printf("\n"); } } 程序运行后的输出结果是( )
A.1*1=1 1*2=2 1*3=3 2*1=2 2*2=4 3*1=3
B.1*1=1 1*2=2 1*3=3 2*2=4 2*3=6 3*3=9
C.1*1=1 1*2=2 2*2=4 1*3=3 2*3=6 3*3=9
D.1*1=1 2*1=2 2*2=4 3*1=3 3*2=6 3*3=9