【单选题】The first kind of site differs from the second kind of site in that
A.
the first kind sells commodities while the second offers service.
B.
the first kind extends items sold beyond the traditional categories.
C.
the second kind is rising while the first kind is declining in the world of online commerce.
D.
the second kind offers untraditional jobs to people experienced ill auctioning.
【判断题】泵站工程的枢纽布置就是综合考虑各种条件和要求,确定建筑物种类并合理布置其相对位置和处理相互关系。( )
【单选题】老年人视觉功能减退的表现不正确的是
C.
对光线明暗的适应力降低,夜间视力较差,阅读时,需要较亮的光线
E.
深度视觉明显下降,有时无法判断距离和深度,易摔倒
【单选题】The examples given for the first kind are________.
B.
doorbells and telephone bells
C.
church bells and telephone bells
D.
typewriters and cash registers
【简答题】It is the first American movie of this kind __________ I've ever seen. [A] which [B] that [C] what [D] when
【简答题】TCP使用三次握手协议来建立连接,设A、B双方发送报文的初始序列号分别为X和Y,A发送( 1 )的报文给B,B接收到报文后发送( 2 )的报文给A,然后A发送一个确认报文给B便建立了连接。( ) (1)A. SYN=1,序号=X B. SYN=1,序号=X+1,ACK X =1 C. SYN=1,序号=Y D. SYN=1,序号=Y,ACK Y + 1 =1 (2)A.SYN=1,序号=X+1 B...
【单选题】TCP使用三次握手协议来建立连接,设甲、乙双方发送报文的初始序号分别为X和Y,甲方发送()的报文给乙方。