只有一个细胞的生物都是不能独立生存的生物，你认为这种说法 [ ]
A．不对
B．对
C．可能对
D．可能不对
答案：A
C相电压互感器二次侧断线，将造成三相三线有功电能表可能正转、反转或不转。
The commander of a rescue unit designated to co-ordinate search and rescue operations within a specified area is the（）.
A.General commander
B.Commander general
C.Search commander
D.On-scene commander
