对于A320飞机起落架的UPLOCK、DOWNLOCK临近电门数量说法正确的是
A每个起落架UPLOCK和DOWNLOCK各两个
B每个起落架UPLOCK一个,DOWNLOCK两个
C每个起落架UPLOCK两个,DOWNLOCK一个
D每个起落架UPLOCK和DOWNLOCK各一个
A每个起落架UPLOCK和DOWNLOCK各两个
B每个起落架UPLOCK一个,DOWNLOCK两个
C每个起落架UPLOCK两个,DOWNLOCK一个
D每个起落架UPLOCK和DOWNLOCK各一个