Part I Listening Comprehension (20 minutes) Section A 1. A) It was misleading. B) It was enjoyable. C) It was rather boring. D) It was just so-so

数字通信系统具有许多优点。然而许多信源输出都是模拟信号。 若要利用数字通信系统传输模拟信号,一般需三个步骤: (1)把模拟信号数字化,即模数转换(A/D); (2)进行数字方式传输; (3)把数字信号还原为模拟信号,即数模转换(D/A) 由于A/D或D/A变换的过程通常由信源编(译)码器实现,所以我们把发端 的A/D变换称为信源编码,而收端的D/A变换称为信源译码,如语音信号的数字 化叫做语音编码

Main Purpose Study an algorithm: – Translating a regular expression into a DFA via NFA

5.1 Reversible Binding of a Protein to a Ligan proteins interact with other molecules and how their in- Oxygen-Binding Proteins 158 orotein structure. The 5.2 Complement protein's func- and Ligands: The Immune Immunoglobulins 174 5.3 Protein Interactions Modulated by Actin, Myosin, and

The idea of Recursive-Descent Parsing Viewing the grammar rule for a non-terminal A as a definition for a procedure to recognize an A The right-hand side of the grammar for A specifies the structure of the code for this procedure The Expression Grammar:

7.1 数/模（D/A）转换 7.2 模/数（A/D）转换 7.3 数/模、模/数通道设计

6.1 可编程并行I/O接口8255A 6.2 串行通信和串行I/O接口 6.3 可编程串行I/O接口8251A

• Application: Zone melting Morphology Instability of a S/L interface • Constitutional undercooling • Morphological instability of a S/L interface

SQL in a Programming Environment embedded SQL persistent stored modules Database-Connection Libraries Call-level interface (CLI) JDBC PHP

5.1 中断控制器8259A 5.2 DMA控制器8237A 5.3 定时/计数器8253