单项选择题
A.喷油压力 B.喷油量 C.延续时间 D.喷油提前角
A.0.003～0.014mm B.0.003～0.14mm C.0.03～0.014mm D.0.03～0.14mm
A.0.15mm B.0.5mm C.1.5mm D.0.10mm
A.＋0.050～＋0.070mm B.－0.050～＋0.070mm C.＋0.50～＋0.70mm D.＋0.050～－0.070mm
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