问题:
Which two code fragments represent these relationships?()
A . class Widget{Sprocket s;};class Gadget extends Widget{Spring s;}
B . class Widget{};class Gadget extends Widget{Spring s1; Sprocket s2;}
C . class Widget{Sprocket s1; Spring s2;};class Gadget extends Widget{}
D . class Gadget{Spring s;};class Widget extends Gadget{Sprocket s;}
E . class Gadget{};class Widget extends Gadget{Sprocket s1; Spring s2;}
F . class Gadget{Spring s1; Sprocket s2;};class Widget extends Gadget{}
Which two code fragments represent these relationships?()
● 参考解析
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