Engine: Expired / General Subjects

1. A A chlorinator located at the potable water storage tank recirculation line.
2. B A brominator located at the desalinator discharge piping to the potable water storage tank.
3. C An ultraviolet irradiator at the desalinator discharge to the potable water storage tank.
4. D A chlorinator located at the desalinator discharge piping to the potable water storage tank.

Tip: press A-D to answer