單項選擇題

主控GPB板的串口和以太網(wǎng)口連線在ICF的出口位置順序正確的是()。

A.從下往上為:備用板串口,備用板以太網(wǎng)口,主用板串口,主用板以太網(wǎng)口
B.從下往上為:主用板串口,主用板以太網(wǎng)口,備用板串口,備用板以太網(wǎng)口
C.從下往上為:備用板以太網(wǎng)口,備用板串口,主用板以太網(wǎng)口,主用板串口
D.從下往上為:主用板以太網(wǎng)口,主用板串口,備用板以太網(wǎng)口,備用板串口

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