硝基涂料的种类很多，不属于按功能和组成分类的是（）。
A.清漆
B.磁漆
C.底漆
D.乳胶漆
参考答案：D
Professor Li keeps telling his students that the future ______ to the well-educated. [ ]
A. is belonged
B. belongs
C. is belonging
D. will be belonged
A．，正电荷
B．，正电荷
C．，负电荷
D．，负电荷
，正电荷
，正电荷
，负电荷
，负电荷