The individual passenger mask deployment is initiated automatically or manually.The above sentence means "各旅客（氧气）面罩的使用, 被自动或手动起始."
A.1
正确答案是A
The individual passenger mask deployment is initiated automatically or manually.The above sentence means "各旅客（氧气）面罩的使用, 被自动或手动起始."
A.1
正确答案是A