A:5倍目镜、10倍物镜.
B:10倍目镜、10倍物镜
C:5倍目镜、40倍物镜
D:10倍目镜、40倍物镜
金属单质 ____ ;
如图,AB=8cm,AD=BC=5cm,则CD等于( )
—This apple pie is too sweet, don't you think so?
—_____. I think it's just right, actually.
对实验现象的认真分析,有助于我们理解科学本质。下列根据实验现象得出的关于物质组成成分的结论,正确的是()
如图,矩形ABCD中,AB=8,BC=6,P为AD上一点,将△ABP沿BP翻折至△EBP,PE与CD相交于点O,且OE=OD,则AP的长为____