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单项选择题气门重叠角=()

A、进气提前角+排气迟闭角+排气提前角

B、排气提前角+进气迟闭角+进气提前角 

C、进气提前角+进气迟闭角+排气迟闭角

D、排气提前角+排气迟闭角+进气提前角+进气迟闭角

  • D
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