A permanent record of all detector tests must be maintained for:
A. at least 2 years
B. at least 5 years
C. at least 15 years
D. as long as the building is occupied.
Ans: B. at least 5 years
Health Professions
A. at least 2 years
B. at least 5 years
C. at least 15 years
D. as long as the building is occupied.
Ans: B. at least 5 years