共找到 22734 与－×÷ 相关的结果，耗时2 ms
以下______地址是MAC地址。A．0D-01-22-AAB．00-01—22-0A-AD-01C．A0.01.00D．139.216.000.012.002
从技术发展角度看，最早出现的IP电话工作方式是( )。A．PC-to-PCB．PC-to-PhoneC．hone-to-PCD．Phone-to-Phone
下列关于函数依赖的叙述中，______是不正确的。A．由X-＞Y，X-＞Z，有X-＞YZB．由XY-＞Z，有X-＞Z，Y-＞ZC．由X-＞Y，WY-＞Z，有XW-＞ZD．由X-＞Y及Z包含于Y，有X-＞Z
----I’ve got to go now.---Must you? I you could stay for dinner with us.A. think B. thoughtC. have thoughtD. am thinking
---Peter , where did you guys go for the summer vacation?----We________ busy with our work for months, so we went to the beach to relax ourselves.A.
A．(-d|d)d*E(-d|d)d*|(-d|d)d*.d*(ε|E(-d|d)d*)B．(-d|d)dd*(.|ε)d*(ε|E(-d|d)d*)C．(-d|d)dd*E(-|d)d*|(-d|d)dd*．d*(ε|E(-|d)d*)D．(-d|d)dd*E(-d|d)d*|(-d|d)dd*
A．fi(X)=min{fi-1(X),fi-1(X)+Pi}B．fi(X)=max{fi-1(X),fi-1(X-Wi)+Pi}C．fi(X)=min{fi-1(X-Wi),fi-1(X-Wi)+Pi)D．fi(X)=max{fi-1(x-Wi),fi-1(X)+Pi}
A．(-d|d)d*E(-d|d)d*|(-d|d)*.d*(ε|E(-d|d)d*)B．(-d|d)dd*(.|ε)d*|(ε|E(-d|d)d*)C．(-|d)dd*E(-|d)d*|(-d|d)dd*.d*(ε|E(-|d)d*)D．(-d|d)dd*E(-d|d)d*|(-d|d|)dd*
下列式子中，不正确的是______。A．R-S=R-(R∩S)B．R=(R-S)∪(R∩S)C．R∩S=S-(S-R)D．R∩S=S-(R-S)
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