对死亡患者进行尸检，须有近亲属同意并签字。（）
参考答案：对
The reform and opening-up policy has___________ great changes to our life. [ ]
A. brought about
B. brought out
C. brought in
D. brought up
电机车的司控器转到“8”位时，电机端电压为（）
A、电网电压
B、电网电压之半
C、电网电压的1/3
