×
单选题
关于再循环风扇系统正确的是：
A
可以从前货舱后部接近
B
安装时确保气流方向要正确
C
再循环风扇单向活门确保安装的时候方向要正确
D
以上都对
答案解析
正确答案：D
题目纠错
培训教育知识题库2
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