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【多选题】
我国居民盈余主要的使用方式是A.
金融投资
B.
现金储蓄
C.
储蓄存款
D.
实物投资
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【单选题】The figure given below shows the market for MP3 p layers in a small country . D d and S d are the domestic demand and domestic supply curves of the MP3 players before the imposition of the quota. ( S ...
A.
B.
C.
D.
D
【单选题】The figure given below shows the market for moped imports in the country . D M and S X are the domestic demand for imports and export supply curves respectively. 0 Price $750 $715 $800 D M = D d - S d...
A.
B.
C.
D.
D
【单选题】Figure Problem shows a standing wave on a 2.0 m long string that has been fixed at both ends and tightened until the wave speed is 40 m/s . The frequency is _____________ .【图片】
A.
40Hz
B.
80 Hz
C.
160 Hz
D.
20 Hz
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