3-54.  What  are  the  most  important  deterrents 3-60. against  rf  burns? 1.  Rubber  gloves  and  shoe  soles 2.  rf  hazard  warning  signs 3.  Training  and  awareness 4.  Equipment  design  modifications 3-55.  Which  of  the  following  items  can  be used  for  protection  from  chemical 3-61. warfare (CW) agents? 1. Masks 2. Clothing 3. Nerve agent antidotes 4.  Each  of  the  above 3-56.  What  is  your  personal  first  line  of defense in chemical warfare? 3-62. 1.  Work  clothing 2.  A  protective  mask 3. Impregnated clothing 4.  Protective  gloves 3-57. A protective mask protects the wearer against which,    if  any,  of  the following   gases? 3-63. 1.  Carbon  monoxide 2.  Carbon  dioxide 3. Ammonia 4. None of the above 3-58. When entering an area that has a deficiency  of  oxygen,  you  must  wear which  of  the  following  masks? 3-64. 1. MCU-2/P 2. M17A1 3. OBA 4. ND MK V 3-59.  The  mechanical  filter  in  the  filtering system  of  protective  masks  clears  the inhaled  air  of  which  of  the  following kinds  of  contaminants? 3-65. 1. Solid particles only 2. Liquid particles only 3.  Solid  and  liquid  particles 4.  Toxic  vapors The  useful  life  of  a  mask’s  filter element  depends  on  which  of  the following  conditions? 1. Weight of the wearer 2. Work rate of the wearer 3.  Breathing  rate  of  the  wearer 4.  Each  of  the  above When  the  filter  canister  for  the  Mk  V protective  mask  is  left  in  its original  hermetically  sealed container,    what  is  its  shelf  life? 1.  2  to  3  years 2.  4  to  6  years 3.  7  to  10  years 4.  Indefinite The  size  of  the  MCU-2/P  protective mask  issued  to  each  person  depends  on which  of  the  following  factors? 1.  Hat  size 2.  Face  length 3.  Thickness  of  hair 4.  Distance  from  ear  to  ear When you don or adjust the MCU-2/P mask,    which  of  the  following  mask parts should NOT be held? 1. The canister 2. The voicemitter 3.  The  head  harness 4. The outlet valve assembly In  an  actual  chemical  threat s i t u a t i o n,    what  should  be  the  first step  in  donning  the  MCU-2/P  mask? 1. Remove your glasses 2. Remove your hat 3.  Stop  breathing 4. Grab the mask Since  large  droplets  of  CW  agent  may penetrate  impregnated  clothing,  which of  the  following  types  of  clothing should  be  worn  topside  as  the  outside garment  over  the  impregnated clothing? 1.  Wet-weather  clothing 2.  Asbestos  clothing 3.  Reflective  clothing 4.  Ordinary  work  clothing 19