什么叫地震波的振动图？什么叫地震波的波剖面？
Switch R1 is configured to use the VLAN Trunking Protocol （VTP）. What does R1 advertise in its VTP domain？（） The VLAN ID of all known VLANs，the management domain name，and the total number of trunk links on the switch.。 The VLAN ID of all known VLANs，a 1-bit canonical format （CF1 Indicator），and the switch configuration revision number.。 The management domain name，the switch configuration revision number，the known VLANs， and their specific parameters.。 A 2-byte TPID with a fixed value of 0x8100 for the management domain number，the switch configuration revision number，the known VLANs，and their specific parameters.。 None of the other alternatives apply.。
下列各项中，（）属于法律。 《中华人民共和国民办教育促进法》。 《教师资格条例》。 《中华人民共和国义务教育法》。 《中华人民共和国学位条例》。
Which of the following statements is correct regarding PIM Sparse Mode operations？（） It does not support all underlying unicast routing protocols like GBP。 It supports shared trees only assuming all hosts want the multicast traffic。 Receivers are registered with RP by their first-hop router。 Receivers are joinedto the Shared Tree（rooted the rp ）by their local Designated Router（DR）。 From the RP，traffic flows down a Source Tree to each receiver。
四冲程机
中国少年先锋队直接受（）的领导。
