单项选择题
A.4.4–5.0GHz B.4.5–5.1GHz C.4.6–5.2GHz D.4.7–5.3GHz
A.3.1–4.0GHz B.3.2–4.1GHz C.3.3–4.2GHz D.3.4–4.3GHz
A.HARQ重传 B.加密和完整性保护 C.QoS映射 D.重排序 E.ARQ
A.2 B.3 C.10 D.11 E.12
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