In accordance with 46 CFR Part 112, a storage battery for an emergency lighting and power system must have the capacity to accomplish which of the following?

Question

Accepted Answer

close all watertight doors twice and open them once

Answer

open all watertight doors four times and close them twice

Answer

open and close all watertight doors in six consecutive cycles within a 20 second period

Answer

open and close all watertight doors in six consecutive cycles within a 45 second period

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