CheckBox通过样式设置CheckBox选中和非选中显示不同的图标功能，需要设置selector哪些属性？ A: android:drawable="@drawable/ck_check" android:state_checked="true" B: android:drawable="@drawable/ck_uncheck" android:state_checked="false" C: android:drawable="@drawable/ck_uncheck" D: android:id="@+id/ckSH"

【单选题】Android 專案中通常將圖形檔案置於何資料夾中? (A)src/drawable (B)res/layout (C)res/graghic (D)res/drawable A. src/drawable B. res/layout C. res/graghic D. res/drawable

Drawable动画可以和View动画组合

android:background="@drawable/logo"表示设置了背景颜色

In the US movie rating system, a ______ movie is a movie appropriate for all ages. A: G B: PG C: PG-13 D: R

逐帧文件保存到项目的/res/drawable/ 目录下

Two systems of weights and measures used in the U.S. are ______. A: the U. S. Customary System and the metric system B: the International System and the metric system C: the Imperial System and the metric system D: the Customary System and the Imperial system

Starting system and ignition system belong to the electrical system？

What does the autopilot system include?? Hydraulic system|Mechanical system|Electrical system|All of above

The Atlantic Ocean is ( ). A: a closed system B: an open system C: an isolated system D: a homogeneous system