边数为15的无向简单完全图的着色数是( )。
A. 4
B. 5
C. 6
D. 7
What is the passage mainly about?
A. low operating earnings
B. reasons for increased EBIT
C. errors in a P & L statement
D. proposed changes in division A1
Which of the following changed year over year?
A. sales volume
B. sales cost
C. variable sales
D. cost of goods sold
Division A1 managers raised prices because
A. the profit center was diminishing.
B. operating expenses skyrocketed.
C. one of the suppliers raised its prices.
D. wholesalers could absorb the increase.
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