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单选题
219.什么时候DECEL灯在自动刹车时亮?( )when dose the DECEL lights comes on at the automatic brake ?
A
自动刹车按钮按下Automatic brake button press in
B
自动刹车按钮释放Automatic brake button release
C
减速值到正确值时Deceleration values to the correct value
答案解析
正确答案：C
解析：
什么时候 DECEL 灯在自动刹车时亮? ( ) When does the DECEL light come on during automatic braking?
答案解析：题目问的是自动刹车时 DECEL 灯什么时候会亮起。从选项中，A 项 "自动刹车按钮按下" 意味着刹车按钮按下时触发，B 项 "自动刹车按钮释放" 意味着刹车按钮释放时触发，C 项 "减速值到正确值时" 更符合 DECEL 灯亮起的逻辑，因为 DECEL 灯通常在刹车过程中显示减速情况。因此，正确答案是 C 项 "减速值到正确值时"。
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