关于光学密度的叙述,错误的是() A.无量纲 B.又称黑化度 C.其值与看片灯的强弱 发布时间:2017-04-16 18:37 │ 来源:www.tikuol.com 题型:单项选择题 A1/A2型题 问题: 关于光学密度的叙述,错误的是()A.无量纲B.又称黑化度C.其值与看片灯的强弱有关D.是一个对数值,取决于I/IE.其值由照片吸收光能的黑色银粒子数决定
题型:单项选择题 A1/A2型题 —I heard a bus accident happened yesterday. —The bus crashed. Luckily, only a few passengers were _____ injured in the traffic accident. A.slightlyB.approximatelyC.exactly D.gradually 查看答案