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【单选题】
某集团企业5个分公司分别派出1人去集团总部参加培训，培训后再将5人随机分配到这5个分公司，每个分公司只分配1人。问5个参加培训的人中，有且仅有1人在培训后返回原分公司的概率：A.
低于20%
B.
在20%～30%之间
C.
在30%～35%之间
D.
大于35%
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反馈参考答案：
举一反三
【单选题】Wide Area Network (WAN) is a computer network that covers a broad areA. Which statement is correct for wide-area network (WAN)?（）
A.
Connects client devices wireless protocol
B.
Crosses metropolitan, regional, or national boundaries
C.
Limited in a single building, a group of buildings, or even a single room
D.
Encompasses an entire city or metropolitan area and connects multiple local-area networks (LANs)
【单选题】A wide area network:
A.
gives equal power to all computers on the network and is used primarily in small networks.
B.
spans a large geographical distance, and may consist of a variety of media technologies.
C.
is a private, multipath, data-only, third-party-managed network that multiple organizations use on a subscription basis.
D.
routes and manages communications on the network and coordinates network resources.
【单选题】Wide Area Network (WAN) is a computer network that covers a broad areA. Which statement is correct for wide-area network (WAN)?（）
A.
Limited in a single building, a group of buildings, or even a single room
B.
Crosses metropolitan, regional, or national boundaries
C.
Encompasses an entire city or metropolitan area and connects multiple local-area networks (LANs)
D.
Connects client devices wireless protocol
【单选题】“不必说…高大的皂荚树，紫红的桑葚，也不必说鸣蝉在树叶里长吟，轻捷的叫天子突然从草间直窜向云霄里去了。 ”下列哪项不是皂荚树、鸣蝉等生物的基本特征
A.
新陈代谢
B.
生长发育
C.
反射
D.
繁殖
【简答题】linux 文件系统中每个文件都是用 来标识。
【简答题】WAN (Wide Area Network)
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