Black smoke exhausting from an operating diesel engine is an indication of poor combustion which may be caused by () water in the fuel。 insufficient fuel for combustion。 clogged air intake passages。 burning lubricating oil。
国家处理中心已经清算的大额支付往账可以申请撤销。
什么是挥发份?对熟料烧结有什么影响?
“态度的形成是一个中性概念与一个带有社会积极或消极含义概念重复匹配的结果”,这是态度形成理论中学习论的基本观点。
冶金生产所使用的燃料应具备什么条件?
Where must you record the date of each emergency training drill conducted on a ship().