What are some virtues of implementing end-to-end VLANs?()
A. End-to-end VLANs are easy to manage.
B. Users are grouped into VLANs independent of a physical location.
C. Each VLAN has a common set of security and resource requirements for all members.
D. Resources are restricted to a single location.
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皮带机在输送物料中,有时会混有金属杂物,如不及时发现就会划伤皮带造成事故,因而安装()可将金属杂物及时清除。
果蔬汁饮料可以补充()。
A. 脂溶性维生素
B. 水溶性维生素
C. 矿物质
D. 膳食纤维
缺血性骨坏死最易发生于()
A. 股骨颈骨折
B. 髌骨骨折
C. 髋臼骨折
D. 胫骨下段骨折
E. 肱骨上段骨折