Over 1 Europeans began changing their old currencies for the euro. Altogether 2 banknotes and 3 coins — worth 4 euros or 5 U.S. dollars — have been produced for the switchover.
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【单选题】当开关电器开断电路时,如果电路电压超过( ) V ,触头刚分离后,触头之间就会产生强烈的白光,即为电弧。
【简答题】College Students’ Job-hunting 1. Recently , college students’ employment has become a hot topic. 2. What amazes us most is that, according to the statistical chart, about 40 percent of college graduat...