题目内容

解微分方程应用问题的第六步是写出模型

A. 对
B. 错

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Choose the best alternative to replace the expression in italics.Establish (line 21) a new direction or goal for a group;

A. Make
B. Set
C. Get

Gain the support, cooperation and commitment(line23) of those they need to move in that new direction

A. involvement
B. hostility
C. indifference

Motivate them to overcome obstacles (line 27) in the way of the company's goals

A. objects
B. barriers
C. obsessions

After a steady rise (line 31) .

A. series of raises
B. series of increases
C. series of promotions