按压缩气体与液化气体的分类,氮属于()气体。
(A)助燃
(B)不燃
(C)剧毒
(D)易燃
参考答案:B
三相交流电机在三相交流电通入电机定子绕组后,在空间产生()。
A、电压
B、磁场
C、电流
D、旋转磁场
In relation to the Zimbabwe legal system, explain the role and duties of the following officers of the court in the administration of justice:
(c) Prosecutors; (2 marks)