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【单选题】
Course summary design is one of the most important parts for creating a course, which required top design for the whole course including course background, course objectives, design principles, learning outcomes, and learning methods to guide next steps. Course BackgroundA.
Course summary design is one of the most important parts for creating a course, which required top design for the whole course including course background, course objectives, design principles, learning outcomes, and learning methods to guide next steps.
B.
sdfs
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【单选题】以下关于IP地址叙述正确的是( )
A.
一个域名对应多个IP 地址
B.
主机的IP 地址和主机域名完全一回事
C.
一个IP 地址只能对应一个域名
D.
主机的IP 地址和主机的域名可通过DNS 系统转换
【简答题】以下动作质量评分中扣0.3的是：（）、器械掉地。