2.1的1.001倍比2.1大.______(判断对错)
因为1.001>1,
所以2.1×1.001>2.1.
故答案为:√.
--Time and tide wait for no man.
---________. We should value our time.
A.Absolutely right
B.I can’t agree with you
C.Nonsense
D.Certainly not
汇聚型PCM设备应至少具备()个2Mb/s线路接口,并能互为保护。
A.2
B.4
C.6
D.8