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