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路基面以上的线路部分，轨道直接承受列车荷载引导列车行走，由钢轨、配件、（）等组成。
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对地电压：电气设备的接地部分，如接地的外壳和接地体等，与（）的“地”之间的电位差。
某人10月份营业额为8000元，规定的起征点为260元，营业税税率为5%，城建税税率为7%。计算此人当月应纳营业税税额及城建税税额。
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. Euro is available in all EU member countries.
操作电容器时应注意哪些事项？
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