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
A.The fire-proof materials and seals are mounted on or about the power unit.
B
B.The fire-resistant partitions and seals are mounted on the power unit.
C
C.The fire-resistant partitions and seals are mounted on or about the power package.
答案解析
正确答案:C
相关知识点:
动力装置阻热物位置
