【单选题】Britain, ______________many other industrialized countries, ______ experienced major changes over the past 100 years.
【单选题】How many Dalehouse restaurants are there in other countries at the moment?
【简答题】如将变压器误接到等电压的直流电源上时,由于E= ,U= ,空载电流将 ,空载损耗将 。
【单选题】Many important leaders of different countries______ in the opening ceremony of the 29th Olympics held on August 8,2008.
【单选题】This kind of fruit not only sells well on the local market, but is also _____ to many countries at the same time. [ ]