Normally, the percentage of oxygen in air is ______________.
A
0.16
B
0.18
C
0.21
D
0.25
E
İlgili Sorular
You are planning a voyage from San Francisco to Japan. Which publication contains information on the...Which two components pass through the shank of an LWT anchor?The owner, agent, Master or person-in-charge of a small§passenger vessel involved in a marine casual...Which chemical is used to treat water in order to ensure its safety for drinking?The locker or space containing the self-contained breathing apparatus must be _______________.