Engine_2014 : Steam Plants - 1442/1951
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| Guardian valves are installed on main propulsion turbines to __________. |
| A) prevent steam from leaking into the astern element while the vessel is maneuvering |
| B) provide an emergency means of quick throttle closing |
| C) provide a means to supply steam directly to the astern element of the turbine |
| D) prevent steam from leaking into the astern element at full sea speed |
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