单项选择题
Given that the elements of a PriorityQueue are ordered according to natural ordering， and：
What is the result？（）
A.apple pear
B.banana pear
C.apple apple
D.apple banana
E.banana banana
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相关考题
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多项选择题
Which three code fragments， inserted independently at line 6， will compile？（）
A.list.add（"foo"）；
B.Object o = list；
C.String s = list.get（0）；
D.list = new ArrayList<String>（）；
E.list = new ArrayList<Object>（）； -
多项选择题
Which two， inserted at line 11， will allow the code to compile？（）
A.public class MinMax<？>{
B.public class MinMax<？ extends Number>{
C.public class MinMax<N extends Object>{
D.public class MinMax<N extends Number>{
E.public class MinMax<？ extends Object>{
F.public class MinMax<N extends Integer>{ -
单项选择题
What is the result？（）
A.0
B.1
C.2
D.3
E.4
F.Compilation fails.
G.An exception is thrown at runtime.
