反对（）是一场长期的斗争，是一场持久战、攻坚战，不是一蹴而就的。
A.懒散之弊
B.倦怠之弊
C.作风之弊
D.无为之弊
参考答案：C
Which of the following most accurately describes the shape of the average fixed cost (AFC) curve The AFC curve:（）
A. is always below the average variable cost curve.
B. has the same shape as the average total cost curve.
C. becomes flatter as output increases.
如果CRT显示器没有消磁功能，显示器被磁化了，（）可以对其进行消磁。
A.清洁显示器
B.使用静电环
C.打开显示器
D.持续开厂关显示器电源
