什么叫长期工作电流？
参考答案：
是指电气设备满载时的持续工作电流，称为长期工作电流。
误码率应该是衡量数据传输系统( )工作状态下传输可靠性的参数。
A．正常
B．不正常
C．出现故障
D．测试
Now,many Chinese are buying their own house. Over the past years, the price of real estates has doubled and redoubled, but people still wait in queues for their chance to buy.
