What was the fundamental shift that Apple's iPad marked in the computer industry? (More than one answer)
A.
Software companies did not control the market any longer.
B.
The power had shifted back to the manufacturers.
C.
Apple's iPad made computer available for everyone.
D.
It made learning enjoyable.
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【单选题】分析如下 Java 代码,如果想在控制台上输出 “B 类的 test()方法”,则在横线处应填入 ( )。 class A { public void test() { System.out.println("A 类的 test() 方法 "); } } class B extends A { public void test() { System.out.println("B 类的 test()...