题干
选出你所听到的句子（ ）
A：Mona Lisa is known in the world.
B：Mona Lisa is famous for the smile.
C：Mona Lisa is famous in the world.
答案(点此获取答案解析）
C
选出你所听到的句子（ ）
A：Mona Lisa is known in the world.
B：Mona Lisa is famous for the smile.
C：Mona Lisa is famous in the world.
标有“6V3W”的字样， 
没有标记，测得L2电阻为6Ω，把它们串联在电路中，两灯均正常发光，那么该电路两端电压和