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【简答题】
____指令通过发送ICMP包来验证与另一台TCP/IP计算机的IP级连接,应答消息的接收情况将和往返工程的次数一起显示出来。
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反馈参考答案：
举一反三
【简答题】Match the word or words with relevant pictures.
【单选题】在继电控制系统中用逻辑设计法设计逻辑表达式时,逻辑控制信号的选择原则是:
A.
短信号优先，耦合少优先
B.
短信号优先，耦合多优先
C.
长信号优先，耦合少优先
D.
长信号优先，耦合多优先
【多选题】Listen to the conversation and match the relevant information with Brian
A.
The general manager
B.
Consumer Electronic show
C.
Project manager
D.
Hear project manager's opinion about some new projects
【多选题】Listen to the conversation and match the relevant information with Gary.
A.
the profect manager
B.
the marketing manager
C.
want to use TV commercials
D.
think online TV advertising is more effective
【简答题】Match the holiday activities with the relevant expression.
【单选题】In our company, great changes ______ since the new manager came.
A.
took place
B.
will have taken place
C.
take place
D.
have taken place
【单选题】在继电控制系统中用逻辑设计法设计逻辑表达式时，逻辑控制信号的选择原则是：
A.
长信号优先，耦合多优先
B.
长信号优先，耦合少优先
C.
短信号优先，耦合多优先
D.
短信号优先，耦合少优先
【简答题】我国已经形成了 、 、 和 四个工业-城市集聚区 。
【简答题】Match the famous people with their relevant vocations.
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