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【单选题】

When two different metals are joined to form a closed circuit and exposed to different temperatures at their junctions （） which can be used to measure temperature.

A、a current will flow

B、a power will develop

C、a heat will flow

D、a pressure will produce

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第1题
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第2题
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第3题
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第4题
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第5题
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第6题
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第7题
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第8题
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第9题
[单选题] A project requires a new server to be set up with the ability to automatically fail over its Ethernet connection to a second connection if a nem>twom>rk failure occurs. Which of the following provides greatest resiliency？（）

A、m>Twom> switch ports will be needed on a switch,m>twom> Ethernet cables will be needed for theserver each connecting to m>twom> m>differentm> Ethernet cards,and one IP address will be needed  B、m>Twom> switch ports will be needed on m>twom> m>differentm> switches m>twom> Ethernet cables will beneeded for the server each connecting to m>twom> m>differentm> Ethernet cards,and one IP address will be needed  C、m>Twom> switch ports will be needed on m>twom> m>differentm> switches,m>twom> Ethernet cables will be needed for the server each connecting to m>twom> m>differentm> Ethernet cards,m>twom> m>differentm> IP addresses will be needed  D、One switch port will be needed on one switch,a splitter will be needed to split the connection,m>twom> Ethernet cables will be needed for the server each connecting to m>twom> m>differentm> Ethernet cards,and m>twom> m>differentm> IP addresses will be needed  

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