(4) With the exception of hoses used to extinguish fires, any hose connected to. a fire hydrant must be equipped with either an approved backflow prevention. device or an approved four (4) inch air gap, unless in the Department's opinion, the application does not pose a backflow hazard, such as watering a community.
What was most likely the cause of Marie Curie's leukemia? a. Radiation c. Pollution b. Smoking d. Genetics. a. Radiation was most likely the cause of Marie Curie's leukemia.
Marie Curie (1867-1934) was instrumental in the physics of radioactivity. She won two Nobel Prizes, the only person honored as such in two science categories. She was also a p â¦ rofessor at the of Paris, the first woman to hold such an esteemed position. Marie Curie was a scientist who discovered Radium and Polonium.