GSM规范规定，同频干扰保护比C/I>=（）db，邻频干扰保护比C/I>=（）db。 A: 9；-12 B: 9；-9 C: 12；-12 D: -12；-9

要在程序中定义缓冲区BUF,保留9个字节存储空间的语句是() A: BUF<br/>DW 9 B: BUF<br/>DB 9 C: BUF<br/>DB 9 DUP (?) D: BUF<br/>DW 9 DUP (?)

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要在程序中定义缓冲区BUF，保留9个字节存储空间的语句是（）。 A: BUF    DW 9 B: BUF    DB 9 C: BUF    DB9 DUP （？） D: BUF    DW 9 DUP （？）

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柱源距离增加一倍，衰减（）DB。 A: 3 B: 6 C: 9 D: 12

球源距离增加一倍，衰减（）DB。 A: 3  B: 6  C: 9  D: 12

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Ⅲ度烧伤面积各为（）。 A: 1×9% B: 2×9% C: 3×9% D: 4×9% E: 5×9%