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单选题
所有飞机发动机必须满足某些效率、经济性和可靠性的一般要求，这就要求点火系统能够在各种天气和其他不利条件下，在适当的时间向火花塞传递点火脉冲。
A
A.All aircraft engines must meet certain general efficiency, economy, and reliability requirements, which require that the ignition system can provide ignition pulses at the proper time to the spark plug in various weather and other adverse conditions.
B
B.All aircraft engines must meet certain overall efficiency, economy and reliability requirements, which require the ignition system should provide ignition pulses at appropriate times under meteorological and other unfavorable conditions.
C
C.All aircraft engines must meet certain general requirements of reliability, economic and efficiency, which dictates the use of ignition systems that deliver the firing impulse to the spark plugs in all kinds of weather and under other adverse conditions.
答案解析
正确答案：A
相关知识点：
发动机点火系统满足要求
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