油漆按涂刷过程中的不同作用可分为（）。
A.底漆和面漆
B.油性漆和磁性漆
C.甲板漆和水线漆
参考答案：A
Cathy is taking notes of the grammatical rules in class at Sunshine School, where she _____ English for a
year. [ ]
A. studies
B. studied
C. is studying
D. has been studying
自动变速器的内啮合式轮泵，是靠液力变矩器的输出轴驱动的。（）
