On a cold winter night, the persons sleeping in a room with closed door and windows with a coal fire burning inside may die to the excessive accumulation of:
A. Kerosene
B. CNG
C. biogas
D. LPG
Answer:B
On a cold winter night, the persons sleeping in a room with closed door and windows with a coal fire burning inside may die to the excessive accumulation of:
A. Kerosene B. CNG C. biogas D. LPG