在△ABC中,∠C=30°,∠A﹣∠B=30°,则∠A= ____
Last night somebody Mr. Brown's house and took away many things.
如图,S闭合,电源电压不变,滑片P向左滑动时,各电表示数的变化情况是( )
给加下划线的字注音
晌午____ 喃喃____ 窍门____