皮皮学，免费搜题
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搜题
【单选题】
别克新世纪轿车在发动机第一次起动,且转速高于 400r/min时,系统进入( )A.
开环模式
B.
闭环模式
C.
加速模式
D.
.断油模式
拍照语音搜题，微信中搜索"皮皮学"使用
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