The atmospheric pressure on a standard day at sea level will force a column of mercury up into a vacuum tube _______ inches.
A.14.7
B.1013
C.32
D.29.92
正确答案是D
The atmospheric pressure on a standard day at sea level will force a column of mercury up into a vacuum tube _______ inches.
A.14.7
B.1013
C.32
D.29.92
正确答案是D