调整调谐放大器的LC回路参数不会使（）发生改变。

A、整机灵敏度

B、抗干扰能力

C、信号传输

D、电路工作电压

If the center of low pressure is due west of you in the Northern Hemisphere，which wind direction should you expect（）.

A.South to west

B.South to east

C.West to north

D.North to east