知识化是当代科技革命、社会变革最重要的推动因素，也是新军事变革的本质和核心。
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特殊时期专项评价是指各种重大保电活动、电网迎峰度夏、（）前对设备进行的评价。
Which two statements are true about the rendezvo us point (RP) in a multicast network?（）
A. The multicast sources must register with the RP to form the multicast distribution tree.
B. An RP is required only in networks running Protocol Independent Multicast dense mode (PIM DM).
C. The mu lticast receivers must register with the RP to form the multicast distribution tree.
D. An RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM).
E. An RP is required only in networks running Protocol Independent Mu lticast sparse - dense mode (PIM - SDM).
F. To form the multicast distribution tree, the multicast sources register with and the receivers join the R
联合国体系下有关国际技术贸易的法律文件中有法律约束力的是（）。
A. 《联合国海洋法公约》
B. 《国际技术转让行动守则（草案》
C. 《人类环境宣言》
D. 《建立国际经济新秩序宣言》
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