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[主观题]

设计中频数字化接收机为了______。 A.提高雷达的动态范围。 B.提高雷达的观测精度。 C.提高雷达的噪声系数。

设计中频数字化接收机为了______。

A.提高雷达的动态范围。

B.提高雷达的观测精度。

C.提高雷达的噪声系数。

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After reading this story, we know the word "hamburger" comes from__________.A.China becaus

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第4题

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