A.活動指示燈應(yīng)亮起或閃爍、聯(lián)機指示燈應(yīng)亮起或閃爍、故障指示燈應(yīng)關(guān)閉
B.活動指示燈應(yīng)關(guān)閉、聯(lián)機指示燈應(yīng)亮起或閃爍、故障指示燈應(yīng)關(guān)閉
C.活動指示燈應(yīng)亮起或閃爍、聯(lián)機指示燈應(yīng)亮關(guān)閉、故障指示燈應(yīng)應(yīng)亮起或閃爍
D.活動指示燈應(yīng)亮起或閃爍、聯(lián)機指示燈應(yīng)亮起或閃爍、故障指示燈應(yīng)亮起或閃爍