12.检查机车时应做到哪些？《机车乘务员通用知识》P90T399
["\u7b54\uff1a\u68c0\u67e5\u673a\u8f66\u65f6\u5e94\u505a\u5230:\u987a\u5e8f\u68c0\u67e5,\u4e0d\u9519\u4e0d\u6f0f;\u59ff\u52bf\u6b63\u786e,\u6b65\u6cd5\u4e0d\u4e71;\u9524\u5206\u8f7b\u91cd,\u76ee\u6807\u51c6\u786e; \uff082\u5206\uff09\u76ee\u89c6\u8033\u542c,\u4ed4\u7ec6\u5468\u5230;\u9f3b\u55c5\u624b\u89e6,\u7075\u6d3b\u719f\u7ec3; \uff082\u5206\uff09\u4eea\u8868\u91cf\u5177,\u52a8\u7528\u81ea\u5982;\u5224\u65ad\u6545\u969c,\u8fc5\u901f\u679c\u65ad\u3002\uff081\u5206\uff09"]