蓄电池亏电或连续几次使用起动机后，发动机在中速以上运转时，充电电流仍在5A.以下，该故障为（）。
参考答案：充电电流过小
______ is surprising to us is that Tom, for ______ English was once boring, can speak English fluently as though he were a native speaker.
A．What; whose
B．What; whom
C．It; whose
D．As; whom
目前TD一SCDMA系统支持的天线类型有（）.
A、8PATH圆面天线
B、6PATH平面天线
C、8PATH平面天线
