A、受信网络
B、非受信网络
C、防火墙内的网络
D、局域网
A、平面文件
B、映射软件
C、标准化的EDI报文
D、商品检验报验单
Neither of the drivers who are being held by the police__________ whom to
blame for his trouble.
A、know
B、knows
C、toknow
D、haveknown
His wife, to whom he __________ for thirty years, was childless.
A、hasmarried
B、hasbeenmarried
C、hadmarried
D、hadbeenmarried
A、密码技术
B、访问控制
C、数字认证
D、防火墙技术