If fuel injection to a four-stroke/cycle diesel engine begins earlier than designed, ignition may be delayed because the （）.<br>A:cylinder compression pressure may not be high enough<br>B:cylinder compression temperature may be too high<br>C:fuel oil injection pressure may not be high enough<br>D:scavenge and purge process is incomplete

If fuel injection to a four-stroke/cycle diesel engine begins earlier than designed, ignition may be delayed because the （）.
A:cylinder compression pressure may not be high enough
B:cylinder compression temperature may be too high
C:fuel oil injection pressure may not be high enough
D:scavenge and purge process is incomplete

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