(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.
It is caused by: 1  Lymphoid tumours. 2  Prolymphocytic leukaemia (PLL) 3  Hairy cell leukaemia (HCL) 4  Lymphomas with leukaemic expression. 5  Large granular lymphocytic leukaemia. 6  Acute lymphoblastic leukaemia (ALL) and chronic lymphocytic leukaemia (CLL).