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【单选题】
A: Look at this pink watch. It looks great, doesn't it? And it's only $ B: ______.A.
It's only twenty dollars. God knows it.
B.
I don't want to look at it. After all, it's a watch.
C.
The price is good. But I want to buy a more expensive watch.
D.
How is it possible that a watch only cost us $20?
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【简答题】改造前,中国社会存在那些类型的私有制?
【简答题】室内温度是20℃，室外温度是-1℃，室外温度比室内温度低______℃．
【简答题】室内温度是1°，室外的温度是-1°，室内外温度相差______．
【单选题】ILS应包括下列（）基本组成部分。
A.
VHF航向信标、VHF下滑信标、VHF指点信标，及相应的监视、遥控和指示设备
B.
VHF航向信标、UHF下滑信标、VHF指点信标，及相应的监视、遥控和指示设备
C.
VHF航向信标、VHF下滑信标、测距仪（DME），及相应的监视、遥控和指示设备