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问题 多项选择题

下面哪些功能与物理层功能相关？（）

A.接纳控制

B.切换

C.速率匹配

D.内环功控

答案

参考答案：C, D

补全对话，情景问答
选择合适的问句，组成对话。
A. Is your birthday in July, too?
B. Whose birthday is in December?
C. What day is it today?
D. When's your birthday?
A: 1._______________________?
B: It's Monday.
A:  2.___________________ ?
B: My birthday is in July. 3._____?
A: No, my birthday is in January.
B: 4.___________________________ ?
A: Amy's birthday is in December.
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单项选择题

下列Case语句中错误的是（）。

A.Case 0 To 10

B.Case Is＞10

C.Case Is＞10 And Is＜50 

D.Case 3.5，Is＞10
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