Which chemical is used to treat water in order to ensure its safety for drinking?
A
Nitrogen
B
Chlorine
C
Carbon
D
Oxygen
E
İlgili Sorular
What is meant by veering the anchor chain?What is the equivalent of 10 min. 52 sec. in arc units?What information is NOT found in the chart title?A line of position formed by sighting two charted objects in line is called a(n) __________.A crew member is having an epileptic convulsion. You should§____________.