Model OXD-2M O2 defficiency meter contains rechargable battery of . . . . . . . .
A. NiCal
B. Na2Cl
C. NaCl2
D. NaMg2
Answer: Option A
Related Questions on Mine Ventilation
The mechanical mixture of gases existing in a mine given off after explosion called
A. White damp
B. Stink damp
C. Black damp
D. After damp
A Drager Gas Mask does not filter
A. Water vapour
B. Nitrous fumes
C. Carbon monoxide
D. Carbon dioxide
Join The Discussion