单位体积或单位质量的天然气燃烧时,将所发生的蒸气的汽化潜热计算在内的热量称为()。
A.全热值
B.低热值
C.冷热值
D.热值
参考答案:A
f-PSA/t-PSA比值为多少时可作为前列腺肥大和前列腺癌的鉴别点()
A.0.15
B.0.20
C.0.25
D.0.30
E.0.35
---I think we should eat some fresh fruit every day.
--- __________ . An apple a day keeps the doctor away.
A.I couldn’t agree more
B.You can’t be serious
C.No way
D.Well done