The air conditioning system provides a conditioned air environment for the passengers and crew, heats the cargo compartment, cools the electronic equipment, and supplies air for the pressurization system. The above sentence means "空调系统可向乘客和机上乘务人员提供经过调节的空气，对电子设备加温，货舱散热和向增压系统提供增压用空气"。
A.1
正确答案是B