Surface irregularities, such as erosion and pitting on injection pump plungers, will（）<br>A:increase ignition delay<br>B:affect fuel oil metering<br>C:affect engine performance at low speed<br>D:only disappear due to fuel oil abrasion

Surface irregularities, such as erosion and pitting on injection pump plungers, will（）
A:increase ignition delay
B:affect fuel oil metering
C:affect engine performance at low speed
D:only disappear due to fuel oil abrasion

出自：海船船员证

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