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判斷題

列車(chē)受電弓和接觸網(wǎng)之間的關(guān)系稱為弓網(wǎng)關(guān)系。

答案：正確

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一段接觸網(wǎng)正常情況下采用的是單邊供電。

答案：錯(cuò)誤

上海地鐵接觸網(wǎng)上通的是1500V直流電。

答案：正確

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