【简答题】ISDN为用户提供了两类速率接口:一类为【 】;另一类为【 】。
【简答题】B-ISDN 为 综合业务数字网, N-ISDN 为 综合业务数字网。
【单选题】在STEP7的S/R指令中,对于S指令,以下说法正确的是?
【多选题】关于跳转指令“JMP”,以下说法中正确的是( )。
B.
“ JMP ”指令必须有跳转标记( LABEL )
D.
“ JMP ”指令条件满足时,则“ JMP ”与“ LABEL ”之间的程序也是执行的
【单选题】以下关于指令寻址的描述中正确的是( )。
C.
包含了下条指令地址码的指令,下条指令一定会转移到该地址上去
D.
顺序寻址方式下,每执行一条指令,PC的绝对值不一定加1
【单选题】One day, Gina is told that she cannot visit her Grandma Lilly because______.
A.
Grandma is busy preparing for cooking more cookies
B.
Gina cannot make Grandma feel better
C.
Gina needs more sleep and rest
D.
Grandma is not very well and is in hospital
【单选题】The party attempted to assemble its aims into a focussed political _________.
【简答题】The court party expressed their abhorrence of those who attempted to interfere with the royal prerogative, began to be known as .
【简答题】ISDN为用户提供了两类速率接口,一类为______,另一类为主速率接口。