什么是固定碳？对熟料烧结有什么影响？
通信行业提供的服务属于（）服务。 ["接触性","高接触性","中接触性","低接触性"]
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"]
Where must you record the date of each emergency training drill conducted on a ship（）. ["In the logbook","In the Operations Manual","On the Certificate of Inspection","On the muster list"]
轴温监测与报警装置的抗干扰电源，通常采用（）将直流电逆变为交流电，再由交流电整流成直流电。 ["晶体管逆变器","变压器","可控硅","不能确定"]
什么是挥发份？对熟料烧结有什么影响？
