To our great surprise,we have made ______ profitst as we expected despite the economis crisis throughout the world.

A．twice as many

B．twice many

C．twice many as

D．as twice many

当告警窗显示“整流器故障告警”时，应查看（）设备的信息。

A、开关电源

B、进线柜

C、变压器

D、蓄电池