A:乙烷
B:丙烷
C:乙醇
D:乙二醇
一Dad, would you please drive ?
一No hurry. We have enough time before the plane takes off.
硅及其化合物在材料领域中应用广泛.下列说法正确的是( )
在标准状况下,氧气的密度是1.429g/L,10g氧气的体积是多少升?