An emergency generator, driven by an internal combustion engine, shall be tested under load for a minimum of 2 hours at least once every （）<br>A:week<br>B:2 weeks<br>C:month<br>D:3 months

An emergency generator, driven by an internal combustion engine, shall be tested under load for a minimum of 2 hours at least once every （）
A:week
B:2 weeks
C:month
D:3 months

出自：海船船员证

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