可追溯性：追溯所考虑对象的（）、应用情况或所处场所的能力。
查看答案
淋溶土主要分布于湿润地区，因此在利用和改良方面应该注意（）.
Which three statements accurately describe layer 2 Ethernet switches？（）
A. Microsegmentation decreases the number of collisions on the network.
B. if a switch receives a frame for an unkown destination，it uses ARP to resolve the address.
C. Spanning Tree Protocol allows switches to automatically share vlan information.
D. In a properly functioning network with redundant switched paths，each swiched aegment will contain oneroot bridge with all its ports in the forwarding state.All other switches in that broadcast domain will haveonly one root port.
Establishing vlans increases the number of broadcast domains.
F. Switches that are configured with vlans make forwarding decisions based on both layer 2 and layer 3address information.
车站按其站台形式可分为岛式车站、侧式车站、（）、一岛两侧等车站形式。
当室内地面为不透水性垫层时，防潮层一般设在（）处，而且至少要高于室外地坪150mm。
A. 室内地面向上60mm
B. 与室内地面相平
C. 室内地面向下60mm
D. 室内地面向上120mm
微信支付 
支付宝支付