The library isn't open ___________ Monday afternoon. [ ]
A. on
B. at
C. in
答案：A
______: The process of identifying and correcting errors in a program.
A．Debug
B．Bug
C．Fault
D．Default
数量机动幅度的选择权一般属（）
A.卖方
B.买方
C.船方
D.商检机构
