If the air intake flap is not serviceable do the deactivation procedure of the air inlet valve.
如果进气口盖不能使用，则对进气口阀进行失效处理。
A.If the air intake flap is not serviceable lock the air inlet valve in the fully open position. B.Once the air intake flap does not work, activate the air inlet valve. C.Deactivate（失效）the air inlet valve unless the air intake flap is useable.正确答案C
