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【单选题】
A 律 13 折线和 m 律 15 折线近似的主要区别是 m 律正向第一段的斜率要大于 A 律,说明采用 m 律量化时小信号的量化信噪比会()A.
不变
B.
更低
C.
更高
D.
等于0
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【多选题】《工程建设项目招标投标活动投诉处理办法》明确招标投标活动包括（）
A.
签订合同
B.
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C.
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D.
开标
E.
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F.
中标
G.
招标代理招标
H.
合同履行
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