10-23. When the magazine sprinkler system is operating, what devices prevent the buildup of air and water pressure? 1. Ventilation ducts 2. Independent air escape valves 3. Magazine check valves 4. Safety pressure blowout valves 10-24.   If  a  missile  motor  is  accidentally  ignited  in  a magazine,   what   means   are   used   to   avoid spreading smoke and gas to other areas of the ship? 1. Portable vent systems 2. Magazine check valves 3. Exhaust ducts 4. Pressure-relief vents 10-25.   Mk   58   marine   location   markers   should   be stowed in which of the following magazines? 1. A magazine with a sprinkler system 2. A magazine located on the damage control deck 3. A magazine without a sprinkler 4. A magazine with remote control valves 10-26.   Sprinkler systems are required in which of the following magazines? 1. Primary magazines only 2. Ready-service magazines only 3. Missile magazines only 4. Primary,  ready  service,  and  missile  mag- azines 10-27.   Sprinkler systems are classified in what way? 1. By type or location of control 2. By amount of discharge per minute 3. By sprinkler head size 4. By system pressure 10-28.   There   are   a   total   of   how   many   types   of sprinkler remote operations? 1. Five 2. Two 3. Three 4. Four 10-29.   The  "rate  of  rise"  is  indicated  in  a  magazine when the temperature increases at what rate? 1. Slowly 2. Rapidly 3. Normally 4. Exponentially 10-30.   When a rapid increase in temperature occurs in a magazine, what circuit activates the sprinkler system control valve? 1. The F circuit 2. The FH circuit 3. The high-voltage circuit 4. The low-voltage circuit 10-31.   When a slow increase in temperature occurs in a magazine, what circuit activates the sprinkler system control valve? 1. The FH circuit 2. The low-voltage circuit 3. The F circuit 4. The high voltage circuit 10-32.   What minimum number of thermostats should be installed in each magazine? 1. One 2. Two 3. Three 4. Four 10-33.   What minimum number of thermostats should be installed in a magazine that has a deck area of 982 square feet? 1. One 2. Two 3. Three 4. Four 10-34.   Aboard ship, magazine inspections are mandatory according to what OPNAV instruc- tion? 1. 3120.32 2. 4790.2 3. 4790.4 4. 8023.2 10-35.   To  divide  a  large  magazine  area  into  smaller areas  or  bins,  which  of  the  following  equip- ment is used? 1. Stanchions only 2. Battens only 3. Stanchions and battens 4. Cradles and stanchions 10-36.   When metal pallets are NOT used, ammunition should be stowed by what means? 1. In foam padding 2. On dunnage 3. On the deck 4. In stanchions and battens 51