文档管理包括( )等。
A．文件收发
B．文件管理
C．档案管理
D．信息管理
E．资料管理
参考答案：A,B,C,D
____,they continued the work.
A．As it was late
B．It was late as
C．It was as late
D．Late as it was
胆囊结石多为
A．胆固醇结石B．胆色素结石C．混合性结石D．以上都不是E．以上都是
