交流接触器的主要结构包括:电磁系统、触头系统、和灭弧装置三大部份。( )
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安装熔丝时,应顺时针方向弯转熔丝压在垫圈下。( )
A. 对
B. 错
( ) The Statue of Liberty was made by ______ people.
American
B. French
C. both American and French
D. unknown
( ) Lady Liberty is standing tall with the _______ raised with her _______ arm.
A. torch, left
B. torch, right
C. tablet, left
D. tablet, right
( ) _______ represent(s) freedom from oppression.
A. The broken shackles
B. The torch
C. The steel framework
D. The crown with seven points