全党要坚定中国特色社会主义的“三个自信”,这“三个自信”是指()
A、思想自信
B、组织自信
C、道路自信
D、理论自信
E、制度自信
参考答案:C, D, E
规范要求下列哪些A类电气装置和设施的金属部分均应接地?()
A.标称电压220V以及下的蓄电池室内的支架
B.电机、变压器和高压电器等的底座和外壳
C.互感器二次绕组
D.箱式变电站的金属箱体
The old couple were surprised at ________ by itself. [ ]
A. the lost dog returned
B. the dog lost returned
C. the lost dog returning
D. the dog lost returning