制药块（片）应采用湿药切割，定量（）kg。
A、10
B、5
C、2
参考答案：C
I don't know __ now. [ ]
A. where is he working
B. where he is working
C. where did he work
D. where he worked
梁内设置鸭筋的目的是（）。
A.满足斜截面抗弯
B.满足正截面抗弯
C.满足斜截面抗剪
D.使跨中受力纵筋充分利用
