A.visible-print-block B.visible-print-inline C.hidden-print D.print-hidden
A.onclick 鼠標(biāo)點(diǎn)擊某個(gè)對(duì)象 B.onfocus 元素失去焦點(diǎn) C.onload 是某個(gè)頁(yè)面的css js html 文檔結(jié)構(gòu)和圖像被完成加載 D.onmousedown 某個(gè)鼠標(biāo)按鍵被按下
A.display:inline B.display:none C.display:block D.display:inherit