加热炉辐射进料有两个分支,分支流量37t/h,分支注水流量500kg/h,则辐射进焦炭塔流量为()t/h。
A、37.5
B、38
C、74.5
D、75
参考答案:D
血浆[HO3]增加时()。
A.结合钙的浓度降低,离子钙的浓度升高
B.结合钙的浓度升高,离子钙的浓度降低
C.结合钙与离子钙浓度皆升高
D.结合钙与离子钙浓度皆降低
E.结合钙与离子钙浓度不变
— What was the weather like in Guangxi this spring?
— There _____ very little rain.
A. has
B. have
C. is
D. was