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【判断题】
Everyone has to be punctual in Polish business, even the people in higher positions. ( )
A.
正确
B.
错误
举报
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【判断题】Gifts are given at the first business meeting or upon the conclusion of any business arrangement. ( )
A.
正确
B.
错误
【单选题】What have been the main exports? ()
A.
Agricultural products and military equipment.
B.
Chemical products
C.
Motor vehicles
D.
Some fruits.
【单选题】下列程序段的时间复杂度是（ ）。for(i=0;i<m;i++) for(j=0;j<t;j++) c[i][j]=0; for(i=0;i<m;i++) for(j=0;j<t;j++) for(k=0;k<n;k++) c[i][j]=c[i][j]+a[i][k]*b[k][j];
A.
O(m+n+t)
B.
O(m+n*t)
C.
O(m*t+n)
D.
O(m*n*t)