At 6,000 m altitude, the air pressure is approximately ………. the pressure at sea level.
A. same as
B. one-half
C. twice
D. none of the mentioned
Answer:A
At 6,000 m altitude, the air pressure is approximately ………. the pressure at sea level.
A. same as B. one-half C. twice D. none of the mentioned
Explanation: In practical at 6,000 m altitude, the air pressure is approximately one-half the pressure at sea level.