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机械制图采用的是正投影法。____

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图纸格式分为不留装订边和留装订边两种。____

[音频]Listen to the news item again and complete the following sentences.1. The new IMF ______________, which will ______________ at the end of September 2016, will give more _________________ to China's currency than to yen or pound.

[音频]This historic development is "a _______ that China is ___________________________ and ___________________ on the global economic stage.

[音频]China now ______________ more than 15 percent of the _____________, nearly three times ____________ a decade ago.

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