Press the engine fire alarm TEST electric door to check.
A、OnlychecktheAandBfiredetectionloops,FDU,indicationandwarningoftwoengines.
B、Onlychecktheexplosioncapcircuitandlow-pressurewarningcircuitofNo.1andNo.2fireextinguishersoftwoengines.
C、Aandbcheckatthesametime.
发布时间：2025-08-16 06:19:51
