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单选题
在动力装置表面或其周围安装有阻热隔板或封严层。
A
The fire-proof materials and seals are mounted on or about the power unit.
B
The fire-resistant partitions and seals are mounted on the power unit.
C
The fire-resistant partitions and seals are mounted on or about the power package.
答案解析
正确答案：A
相关知识点：
动力装置阻热隔板要记住
