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
单项选择题 The abbreviation BDC means （）.
单项选择题 The （） in the injector will lift at a pre-set pressure which ensures that the fuel will atomize once it enters the cylinder.
单项选择题 The （） or balance tank collects the re-circulated fuel oil.
