单项选择题
A.UPS电源 B.逆变装置 C.断路器跳闸 D.应急照明
A.0.4 B.0.8 C.0.3~0.4 D.1.5~2.0
A.0.1~0.3 B.0.2~0.5 C.0.4~0.7 D.0.6~0.8
A.50% B.60% C.100% D.110%
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