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【多选题】
下列哪些有关 “反向代理器” (Reverse Proxy) 机制的描述是正确的?
A.
客户端可以直接跟服务器直接建立联机 , 反向代理器在线路中间扮演内容快取储存 (cache) 的角色
B.
反向代理器接受来自客户端的联机需求 , 并与该客户端建立联机 . 反向代理器再与服务器建立第二条联机
C.
反向代理器有保护服务器的优点 , 因为客户端无法知道服务器的详细数据如网址等等
D.
反向代理器有负载平衡的优点 , 可以将来是客户端的需求负载平均分配给服务器 .
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A.
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B.
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C.
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critical
C.
stubborn
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A.
色散力
B.
诱导力
C.
取向力
D.
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【简答题】Shelly__________California for Texas in 1996 and__________there ever since. A．left;worked B．has left;had worked  C．left;has worked D．has left;worked
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