单项选择题
A.to work as overload characteristic B.overspeed C.over mechanical load only D.over thermal load only
The fire of burning plastics is classified as () fire.A...
单项选择题The fire of burning plastics is classified as () fire.
A.Class A B.Class B C.Class C D.Class D
The pistons are cooled by () oil from the forced lubric...
单项选择题The pistons are cooled by () oil from the forced lubrication.
A.being given B.giving C.supplying D.being supplied
Engine parameters shall be corresponded to NOx Technica...
单项选择题Engine parameters shall be corresponded to NOx Technical Files,This is required by()
A.MARPOL Annex Ⅲ B.MARPOL Annex Ⅵ C.MARPOL Annex Ⅴ D.MARPOL Annex Ⅳ