热电偶输出热电动势的极性主要有其中哪个电势决定？

工业测温中应用补偿导线的理论依据是什么？当热电偶与补偿导线的极性反接时，对热电偶的输出电势有何影响？为什么？

在热电偶测温回路中接入第三种导体时，只要接入第三种导体的两个接点温度相同，回路中总电动势值（）。

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

The （） is used for hauling in or letting out the wires or ropes.

Vessels must be（）valid certificate of nationality or certificated of registry or license.

热电偶电动势由（）电动势和接触电动势两部分组成。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

热电偶产生的热电动势是由两种导体的接触电动势和单一导体的温差电动势组成的？

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。