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。
查看答案
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
What is included in a baby kit？
A. milk power
B. diapers
C. tissue paper
D. wet towel
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