银行业金融机构信息系统的技术文档资料包括()。
A.系统环境说明文件
B.源程序
C.系统研发、运行、维护过程中形成的各类技术资料
D.账务数据
参考答案:A, B, C
He tried many times to squeeze out of the fence to see the open-air film _______ each time.
A.only to catch
B.unluckily caught
C.always being caught
D.only to be caught
邮票的最小计量单位称为()。