ENGINE LOW PRESSURE VALVE INDICATIONS ON THE ECAM ARE SHOWN GREEN AND IN LINE WHEN:

ENGINE LOW PRESSURE VALVE INDICATIONS ON THE ECAM ARE SHOWN GREEN AND IN LINE WHEN: A.The valve is normally open. B.The valve is normally closed. C.The valve is in transit. 答案:A 解析：这道题目询问ECAM上的发动机低压活门指示何时呈现绿色且在线。在正常情况下，当发动机低压活门处于打开状态时，ECAM上的指示会呈现绿色且在线。因此，正确答案是A.The valve is normally open.