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[单选题]
在汽油发动机电控喷油系统的热丝式和热膜式空气流量传感器中,为了实现恒温差控制,其控制电路必需提供的加热电流为()
A.120~200mA
B.50~120mA
C.5~20mA
D.3~5mA
查看答案
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A.120~200mA
B.50~120mA
C.5~20mA
D.3~5mA
A.②、③、④
B.①、③、④
C.①、②、④
D.①、②、③
A.①、②、④
B.②、③、④
C.①、②、③
D.①、③、④
A.①、②、③
B.①、③、④
C.①、②、③、④
D.①、②、④
A.①、②、④
B.①、②、③
C.①、③、④
D.①、②、③、④