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【单选题】
In many parts of the United States when Wal-Mart opens a new store, some smaller retailers go out of business. One of the reasons for this development could be that:A.
Wal-Mart practices unfair pricing methods that reduce consumer surplus over time.
B.
consumers in those areas receive no consumer surplus from Wal-Mart.
C.
consumers in those areas receive a larger consumer surplus from shopping at Wal-Mart than from the smaller stores.
D.
smaller stores increase prices to compete.
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【简答题】试编写一个 Applet,它接收一个图像文件名为“天空”的图像为背景;接收一个图像文件名为“飞机”的图像,其显示位置为(610,10)然后在Applet中显示这两个图像。
【单选题】宁波市将居民区生活垃圾分为____。
A.
可回收物、有害垃圾、厨余垃圾、其他垃圾
B.
可回收物、有害垃圾、餐厨垃圾、其他垃圾
C.
可回收物、有害垃圾、其他垃圾
D.
可回收物、不可回收物、其他垃圾