单项选择题
A.Fusible links must be replaced if a damper is activated
B.Fusible links are tested by applying a source of heat to them
C.Fusible links must be replaced at every inspection for certification
D.A fusible link will automatically open after a fire is extinguished and reset the damper
单项选择题 The test of a towing vessel’s steering gear control system includes each item EXCEPT（）.
单项选择题 The term LEE SHORE refers to the（）.
单项选择题 The SMS should provide for specific measures aimed at promoting the（）of equipment or systems the sudden operational failure of which may result in hazardous situations.