雷达荧光屏上看到真北指零刻度，而船首线指示本船航向，该显示方式为（）显示。
A、相对方位
B、真方位
C、真运动
D、模拟运动
参考答案：B
tan300º=______．
I’m not a little tired today after giving the room a thorough cleaning and I have never had ______today.
A．as tiring a day as
B．as a tiring day as
C．tiring as a day as
D．day as a tiring as
