【简答题】在 Android4.4 系统之前,访问 SD 卡的应用关联目录需要声明权限,为了兼容老版本手机,还需要在 AndroidManifest.xml 中声明访问 SD 的权限:
【简答题】Evaluate the use of supporting materials in the following speech excerpt. Be sure to deal with all the supporting materials in each paragraph. And be specific in assessing their strengths and weakness...
【判断题】液压传动与机械传动相比较传动比较平稳,故广泛应用于在要求传动平稳的机械上。