若i,j已定义成int型,则以下程序段中内循环体的总执行次数是( )。
for(i=6;i>0;i--)
for(j=0;j<4;j++)
{...}
Goods are carried by several of transport--on road or rail, by sea or air.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
— I wonder whether I could accept this discount or not.
—
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