骨骼性疾病时升高最为显著的是（）
A.ALT
B.γ-GT
C.ALP
D.AST
E.LDH
参考答案：C
As I don't know _____ to take up Miss Rose's course because of her wedding leave, I have
to ask her students about it . [ ]
A. how
B. what
C. where
D. whether
发动机机油泵多采用（）。
A、经向变量
B、轴向变量泵
C、齿轮泵
D、变量泵
