A、 C

He has an A.C. in Accounting from Harvard University.
他拥有哈佛大学的会计学副学士学位。

The air conditioner is not working, it needs an A.C. repairman to fix it.
空调坏了，需要一个空调修理工来修理。
She adjusted the room temperature with the A.C. remote control.
她用空调遥控器调整了房间的温度。
The hotel offers A.C. rooms for guests during the hot summer months.
酒店在炎热的夏季为客人提供有空调的房间。
My car broke down due to a faulty A.C. compressor.
我的汽车因为空调压缩机故障而抛锚了。
We decided to stay inside and enjoy the coolness provided by the A.C. on a sweltering day.
在一个酷热的日子里，我们决定待在家里享受空调带来的凉爽。
The A.C. unit in the conference room keeps the meeting attendees comfortable.
会议室的空调设备让与会者感到舒适。
I need to recharge the A.C. coolant before winter sets in.
冬天来临之前，我需要给空调加注冷却液。
The A.C. system malfunctioned, causing a power outage in the building.
空调系统出现故障，导致大楼停电。
His A.C. wiring was incorrectly installed, posing a potential fire hazard.
他的空调电线安装错误，存在引发火灾的隐患。