如下图所示变压器，N1=380匝，N2=190匝，负载|Z|=12Ω的阻抗值，则等效阻抗|Z'|等于( )。

A.6Ω
B.12Ω
C.24Ω
D.48Ω

未分类题When classifying brands, marketing people tend to employ the categories of 'producer-owned' and 'middleman-owned'.A.RightB.WrongC.Not mentioned

未分类题The term 'oomph'(Paragraph 3) in the text denotesD.energy.

未分类题The word 'divine'(Paragraph 2) in the text probably meansD.spoil.

单项选择题通货膨胀率在3%，40岁的小华如果想要在65岁时拥有相当于现在20万元价值的资产，请问以当年价格计，小华65岁时需要拥有（ ）万元的资产。 A、41.88 B、41.22 C、41.05 D、40.66

未分类题The term 'grub'(Paragraph 4) most probably meansD.stationery.