CBD又称(),CLD又称()。
参考答案:中央商务区;中央生活区
— Don’t worry, Mum. The doctor said it was only the flu.
—_______! I’ll tell Dad there’s nothing serious.
A.What a relief
B.Congratulations
C.How surprising
D.I’m so sorry
网桥的类型有透明网桥和源路径选择网桥,分别对应IEEE的______标准。
A.802.1和802.2 B.802.3和802.4C.802.2和802.4 D.802.3和802.5