(1)计数器接近开关坏; (2)计数器接近开关进水,无信号。
A.15MM B.18MM C.20MM
A.气煤 B.气肥煤 C.贫瘦煤 D.焦煤
A.0.4-0.8 B.1.2-1.8 C.1.8-2.4