生产过程中遇到的化学和物理因素()。
A.全部是有害的
B.其作用决定于条件
C.多数无害仅少数有害
D.多数有害仅少数无害
E.根据水溶性决定其有害或有益
参考答案:B
汉译英:“液相色谱法”,正确的翻译为( )。
A.Chromatography
B.Water Chromatography
C.Liquid Chromatography
D.Fluid Chromatography
Both cities ____very beautiful, attracting people from all over the country.
A has B have C are D is