单项选择题
A.30s B.40s C.50s D.60s
A.水温传感器损坏 B.空气流量计损坏 C.氧传感器信号不正常 D.爆震传感器故障
A.1 B.2 C.3 D.4
A.提前 B.推迟 C.不变 D.以上全错
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