民事法律关系的内容是指( )。
A. 民事权利
B. 民事义务
C. 民事权利和民事义务
D. 民事权利和民事义务共同指向的对象
The visitor who felt his eyeballs being pulled was probably ______.
A. under the influence of liquor
B. stupid
C. influenced by the power of suggestion
D. playing a joke on everyone
The official language of Canada is ______.
A. English
B. French
C. Spanish
D. Both English and French
电气装置特征是由独立功能的电气元器件的组合，额定电压大多为10kV或380V/220V，仅在( )中电压有24V或12V。
A. 传输系统
B. 保护系统
C. 控制系统
D. 接地系统
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