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1. [单选题]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
2. [单选题]国内沿海船舶航行于沿海航线时，船上船钟所采用的时间为：()
A. 世界时
B. 当地平时
C. 当地视时
D. 北京时间
3. [单选题]你船航行在分道通航制区域中，收到“YG”信号，此时你应立即________。
A. 右转
B. 检查本船航向与船位
C. 减速，停车
D. 检查号灯，号型
