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问题 单项选择题

关于调试过程施工清单下列叙述正确的是（）。

A.总包负责填写清单，交给调试机构

B.清单确认总包已经完成功能测试

C.即便项目包含大量的识别体系，测试选样仍然禁止

D.清单不包含测试和平衡

答案

参考答案：A

单项选择题

狭水道航行，计划采用导标方位导航法，此时最好选择位于（）的单一物标作为导标来引导船舶安全航行。

A．计划航线正前方

B．计划航线正后方

C．计划航线正横附近

D．船首向附近
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单项选择题

TCP functions at the Open System Interconnection (OSI) (61) layer, or Layer 4. Its chief responsibility is to ensure (62) end-to-end connectivity. IP, located one layer down, at the OSI network layer, or Layer 3, communicates the addresses of each (63) sender and receiver to the routers along the way. Routers and Layer 3 switches can read IP and other Layer 3 (64) . This information, combined with routing tables and other network intelligence, is all it takes to get (65) the room or around the world via TCP/IP.

（63）是（）

A.packet

B.packets

C.packet’s

D.packets’
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