某同学在用电压表测量串联电路和并联电路两端电压时,分别按图甲、乙两电路图连接.
Don't open the door. It's cold. Please ____ the door.
如图所示,一束光线AO从空气斜射入水中,请画出法线和折射光线的大致方向
给划线的字选择正确的的解释
悠扬的乐声掺和着花草的芬芳,在晚风中飘溢、回荡。( )