热电偶的均质导体定律说明两种均质金属组成的热电偶，其动态响应与热电极的几何尺寸及热电极长度上的温度分布无关。
查看答案
热电偶回路中插入第三种金属，只要插入的两端点温度相同，则不会影响回路的热电势。
A. 对
B. 错
热电偶的热接点尺寸越大，则其动态响应特性越好。
A. 对
B. 错
When the passengers are on board, what should the cabin attendants carry out?
A. direct the passengers to their seats
B. check passengers' hand luggage and other carry-on belongs
C. check all the seat belts and seat positions
D. perform safety demonstration
E. Change seats for passengers if necessary
F. Upgrade the passengers at their requests
G. Check if someone sitting near the exit is able to open the door in an emergency
H. Check all the seat belts and seat positions;
I. offering food and drinks
Where can the passengers put their luggage after boarding?
A. Under their seats
B. Under the seats in front of them
C. In the aisle
D. In the overhead compartments
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