中性点直接接地系统，线路发生单相接地时，线路的零序电流（）
A.由母线流向线路
B.由线路流向母线
C.由线路流向负荷
D.由线路流向变压器
参考答案：A
Could you tell me _____ at the meeting? [ ]
A. what did he say
B. what does he say
C. what is he saying
D. what he said
INTEL915芯片组支持的CPU接口有（）
A.SocketA和Socket478
B.SocketA和Socket423
C.SocketA和SocketT
D.Socket478和SocketT
