MAC地址是一个48比特的数字,分为()。
A.物理MAC地址
B.广播MAC地址
C.组播MAC地址
参考答案:A, B, C
---I won’t have anything __________ against her.
---No. I won’t have that sort of thing __________ again.
A.said; happen
B.saying; happening
C.said; happened
D.saying; happen
胸段脊髓损伤最常见平面为()
A.T1
B.T12
C.T4
D.T6
E.T2