【单选题】某公司为方便远程客户访问公司的某些数据资源,允许客户通过Internet访问公司的FTP服务器,在客户机与FTP服务器之间采用(9)协议,可方便地实现在网络层对数据进行加密。
【单选题】某公司为方便远程客户访问公司的某些数据资源,允许客户通过Internet访问公司的FTP服务器。在客户机与FTP服务器之间采用(44)协议,可方便地实现在网络层对数据进行加密。
【判断题】日利率一般用万分数表示月利率一般用千分数表示,年利率一般用百分数表示
【单选题】函数 y= 2 x 2 x 2 +1 的导数是( )
A.
y ′ = y ′ = 4x( x 2 +1)-4 x 2 ( x 2 +1) 2
B.
y ′ = 4x( x 2 +1)-4 x 3 ( x 2 +1) 2
C.
y ′ = 4x( x 2 +1)+4 x 3 ( x 2 +1) 2
D.
y ′ = 4x( x 2 +1)-4 x ( x 2 +1) 2
【多选题】Among those which is input VAT non-deductible? ( )
A.
transportation services provided to passengers
B.
transportation services along with purchased goods which are destroyed due to poor management
C.
purchased goods which are destroyed due to poor management
D.
purchased goods which are destroyed due to natural disaster