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Behind these holes are the ink well and the heater , creating a 3-dimensional structure . Emergency physicians are warning the public of the dangers of carbon monoxide , or CO , an odorless and colorless gas found in the emissions of fireplaces , gas stoves , water heaters , kerosene heaters , furnaces and boilers . Despite all our attempts to operate the hot water heater , we have never successfully heated a tank of water . " We think this system is going to be a real competitor for thermal solar hot water heaters , which have had many problems over the years , and some day even traditional electric or gas water heaters , " says Hunter Fanney , an engineer in NIST 's Building and Fire Research Laboratory and the system 's inventor . The nine electrical cables carry power from the solar arrays , computer commands and telemetry and electricity to repower the lab 's launch-to-activation heaters , which were disconnected from shuttle power earlier in the spacewalk . He would have me cover his legs with a shawl and turn on the electric heater , and he would take his ease . Water heaters , cooling towers , and warm , stagnant water can provide ideal conditions for the growth of the organism . Bar , back bar , mirror , cash register , iron safe , ice chest , Montacarlo table , and fixtures , desk , stove , wooden partitions , clock , saloon furniture and fixtures , bar fixtures and glass-ware and crockery , electric-light fixtures , water heater , rubber hose , pictures and frames , faucets and spickets , and pumps . What do a printer , copier , desktop computer , telephone , employee alarm , water cooler , string of Christmas lights , electric heater , air conditioner , electric generator , surveillance camera , fire door , exit component , fire extinguisher , electrical conduit , conductor , electric motor , powered industrial truck , acetylene torch , and liquefied petroleum gas oven have in common ?