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问题 多项选择题

确定管理职责应该注意的方面包括（）。

A.职责界限要清楚

B.具体职责横向分配

C.职责中要包括横向联系的内容

D.平均分配每一个人的职责

E.职责一定要落实到每个人，只有这样，才能做到事事有人负责

答案

参考答案：A, C, E

单项选择题

数字信号波形如图示。该波形所代表的二进制数是（）。

A.11111111 

B.01011010 

C.10101010 

D.00000000
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单项选择题

Most IP layer-based proxy mechanisms, such as network address translation (NAT), only support uni-directional proxy, from the internal network to external network (the Internet). The proxy establishes the communication channel by (86) IP addresses. The IP addresses must be (87) . These proxy mechanisms prevent applications that must establish return data channels from establishing their data channels, such as, multimedia applications. IP layer-based proxy mechanisms need additional software (88) for each application that uses (89) channels. SOCKS identifies communication targets through domain names, overcoming the restriction of using private IP addresses. SOCKS can use domain names to establish communication between separate LANs, with (90) IP addresses.

（87）是（）

A.routable

B.locatable

C.path-selected

D.road-defined
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