4-24. When a Mk 25 marine location marker is han- dled, what component physically prevents the base plugs from being accidentally pushed in? 1. The locking block 2. The arming plate 3. The retainer ring 4. The spring-loaded plug retainer 4-25. When a Mk 25 Mod 2 marker is in the water, what liquid serves as an electrolyte to produce a current in the battery? 1. Fresh water 2. Oil 3. Seawater 4. Acid 4-26. What is the average burn time of a Mk 25 Mod 2 marine location marker? 1. 3.0 to 8 min 2. 9  to 12 min 3. 13.5 to 18.5 min 4. 20.5 to 30.5 min 4-27. A   Mk   25   marine   location   marker   can   be launched by which of the following methods? 1. Electronically 2. Manually only 3. Sonobuoy launcher only 4. Manually or sonobuoy launcher 4-28. When  it  is  going  to  be  sonobuoy  launched, what component should be installed around the base of a Mk 25 marine location marker? 1. A red G-ring 2. A black G-ring 3. A Mk 24 Mod 1 adapter kit 4. A Mk 34 Mod 0 adapter kit 4-29. To eject a Mk 25 marine location marker from the  SLC  and  the  sonobuoy  launch  tube,  what device is used? 1. A split foam spacer 2. A JAU-1/B cartridge 3. A Mk 4 cartridge 4. An electromechanical solenoid 4-30. A  Mk  58  Mod  1  marine  location  marker  will produce smoke and flame for what minimum to maximum number of minutes? 1. 10 to 20 min 2. 20 to 30 min 3. 30 to 40 min 4. 40 to 60 min 4-31. A   Mk   58   marine   location   marker   can   be launched by which of the following methods? 1. Hand only 2. Bomb rack only 3. Sonobuoy only 4. Hand, bomb rack, and sonobuoy 4-32. When  carried  externally  on  a  bomb  rack,  the pull ring and reinforced adhesive foil strip are removed from a Mk 58 marine location marker by what means? 1. A cartridge 2. The airstream 3. An arming wire 4. A fuze 4-33. As  the  first  candle  nears  burnout  in  a  Mk  58 marine  location  marker,  the  second  candle  is ignited by what means? 1. The Mk 13 electrical squib 2. The heat from the first candle 3. The transfer time fuze 4. The heat thermocouple 4-34. What force ejects a Mk 46 decoy flare from the dispenser? 1. A Mk 4 or CCU-63/B impulse cartridge 2. A Mk 131 or CCU-63/B impulse cartridge 3. Ram air 4. Internal air pressure 4-35. To extinguish an aircraft parachute flare that is burning  in  the  open,  which  of  the  following methods should you use? 1. A chemical extinguisher 2. A carbon dioxide extinguisher 3. Flooding quantities of water at low pressure 4. Flooding    quantities    of    water    at    high pressure 4-36. Under what (a) condition and (b) authority may pyrotechnics be dumped at sea? 1. (a) Emergency (b) Commanding officer 2. (a) High tempo operations (b) Commanding officer 3. (a) Emergency (b) Ordnance handling officer 4. (a) High tempo operations (b) Ordnance handling officer 21