单项选择题
A.cam B.crosshead C.bulge D.coupling
The amount of lubricating oil in the drain tank should ...
单项选择题The amount of lubricating oil in the drain tank should be checked by （）.
A.measuring B.sounding rod C.metering D.weighting
The abbreviation TDC means （）.A.top dead centerB.temper...
单项选择题The abbreviation TDC means （）.
A.top dead center B.temperature difference center C.time delay dock D.top diesel company
The abbreviation BDC means （）.A.Boston Diesel CompanyB....
单项选择题The abbreviation BDC means （）.
A.Boston Diesel Company B.base circle diameter C.switch board case D.bottom dead center
