Refer to the Thermal Anti-Ice (TAI) CDS indication. TAI shown at the top Left side of each indicator indicates :
A.A.If amber, an overtemperature condition exists in the duct downstream of the engine cowl anti-ice valve.
B.B.If green,the cowl anti-ice valve is closed and the related engine anti-ice switch is OFF.
C.C.If green, the cowl anti-ice valve is open and the related engine anti-ice switch is ON.
D.D.All of the above.
正确答案是C