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1300. 如果主电源故障时提供照明的单独和独立子系统。包括带电池的手电筒、提灯等物品。( )

A
 The alone and independent systems used to provide illumination in case of primary electrical power failure. Includes items such as inertia flashlights, lanterns, etc.
B
 The separate and independent subsystems used to provide illumination in case of primary electrical power failure. Includes items such as inertia flashlights, lanterns, etc.
C
 The separate and independent subsystems used to provide lighting in case of primary electrical power failure. Includes items such as inertia flashlights, lanterns, etc.

答案解析

正确答案:B
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