（）属于电力机车电机范畴。
A、照明灯具
B、整流柜
C、蓄电池
D、劈相机
参考答案：D
—Would you like to go and see Skyfall with me tonight?
—Thank you very much , but I______ it already.
A．see
B．will see
C．have seen
D． am seeing
无符号二进制整数1011000转换成十进制是
A．76
B．78
C．88
D．90
