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单选题
The avionic compartments have: - heat and sound insulation, - maintenance lighting, - air-cooled racks for the electrical and electronic equipment and their related units.
A
电子舱有隔热毯、消音层、维修灯、冷却电气电子设备和相关组件的设备架。
B
电子舱有隔热毯、消音层、维修灯、由空气冷却的电气电子设备和相关组件的设备架。
C
电子舱有绝缘层、维修灯、由空气冷却的电气电子设备和相关组件的设备架。
答案解析
正确答案：B
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