Positive SSL
1 20. 當大氣壓力為780mmHg時,某壓力計測得某鋼筒壓力為4.41psig,若溫度不變,試問大氣壓力為750mmHg時,壓力計之讀數為多少psig
A 4.99
B 4.41
C 4.09
D 3.89