A.點(diǎn)火正常; B.點(diǎn)火過(guò)早; C.點(diǎn)火過(guò)遲
A.0.2~0.4; B.0.6~0.7; C.0.2~0.7
A.1.0-3.5Ώ; B.3-4Ώ; C.5-7kΏ