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电子自动平衡电桥是应用什么原理制成的？
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胺基化过程中，产生腾涌的原因主要是（）
Beads， stones， seashells， paper， precious metals such as gold and silver， base metals such as iron have all been used as money. Today， money is printed on paper. A lot of countries use their own currency， with n ames such as dollar， pound， franc， ruble， yuan and so on. Since 2002， 18 of the EU members have replaced their national currencies by Euro notes and coins. If you want to pay for something in another currency, you have to change your money into the other money. If you want to travel outside your native country, you need to change your own country's money for the money of the country you are visiting. Most large banks sell foreign currencies. You can exchange money at a bank or at an office of a tourist agency Wherever you go, exchanging money puts you in touch with international finance, which is concerned with exchange rates between different currencies. Deciding the rate for the international exchange of money is one of the most complex aspects of international banking. Banks are a good option to get your money exchanged.
哪个世界文化遗产属于印度（）。
根据《移动通信工程钢塔桅结构验收规范》（YD/T5132—2005），当零件采用热加工成型时，加热温度应控制在900℃～1000℃；碳素结构钢和低合金结构钢在温度分别下降到（）之前，应结束加工；低合金结构钢应自然冷却。
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