控制回波出现和亮暗应调节().
A、增益旋钮
B、辉亮旋钮
C、调谐旋钮
参考答案:C
内部融资不能完全满足公司持续、快速的销售收入增长需求时,说明公司利润率低。( )
— Did you remember to pay the telephone bill?
— The telephone bill ? _____
[ ]
A. That isn't due yet.
B. Are you sure ?
C. My telephone is out of order.
D. Please remember the amount.