某建筑物采用TN-C-S系统供电，建筑物地下室设有与大地绝缘的防水层。PEN线进户后即分为PE线和N线，并打人工接地极将PE线重复接地，变电所系统接地RA和建筑物重复接地RB的阻值分别为4Ω和10Ω。各段线路的阻值如图1所示，为简化计算可忽略工频条件下的回路导体电抗，请回答下列问题：

若该建筑物不作重复接地而改为等电位联结，各段线路的阻值如图2所示，试计算作等电位联结后设备A处发生接地故障时预期接触电压U12应为下列哪项数值？（）

A.110V

B.88V

C.66V

D.44V

小医生，下列各句均有一处错误，请找出并改正。

1.Tom's bike is broken. Can you help he?

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2.There aren't some children in the river.

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3.Look! The boy swimming in the lake.

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4.There are 150 millions people in the city.

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5.Learning English are a lot of fun.

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