3.下列关于java中集合接口的说法不正确的是()。
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A:
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![](http://exam.bdqn.cn/cdn/getImage?relativePath=0010000/0009475/9475_1460861118136.png)
(选择一项)
A:
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0010000/0009475/9475_A_1460861118136.png)
B:
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0010000/0009475/9475_B_1460861118136.png)
C:
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0010000/0009475/9475_C_1460861118136.png)
D:
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0010000/0009475/9475_D_1460861118136.png)
5.
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0002000/0001779/1779_1460855959253.png)
(选择一项)
A:
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0002000/0001779/1779_A_1460855959253.png)
B:
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0002000/0001779/1779_B_1460855959253.png)
C:
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0002000/0001779/1779_C_1460855959253.png)
D:
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0002000/0001779/1779_D_1460855959253.png)
10.
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0008000/0007891/7891_1460859922475.png)
(选择一项)
A:
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B:
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D:
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0004000/0003811/3811_1460857369703.png)
(选择二项)
A:
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D:
15.
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0002000/0001928/1928_1460856059567.png)
(选择二项)
A:
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B:
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D:
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0004000/0003707/3707_1460857300399.png)
(选择一项)
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D:
19.
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0002000/0001543/1543_1460855794009.png)
(选择二项)
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21.
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0005000/0004678/4678_1460857982303.png)
(选择一项)
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22.
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0002000/0001439/1439_1460855716628.png)
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23.
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0004000/0003443/3443_1460857112070.png)
(选择二项)
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24.
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0004000/0003936/3936_1460857457627.png)
(选择二项)
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![](http://exam.bdqn.cn/cdn/getImage?relativePath=0010000/0009640/9640_1460861258134.png)
(选择一项)
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27.
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0010000/0009635/9635_1460861253300.png)
(选择一项)
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28.
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0004000/0003623/3623_1460857239881.png)
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30.
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0004000/0003817/3817_1460857374075.png)
(选择一项)
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32.
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0003000/0002017/2017_1460856123481.png)
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34.
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0005000/0004729/4729_1460858022063.png)
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37.
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0010000/0009720/9720_1460861319561.png)
(选择一项)
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39.
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0002000/0001691/1691_1460855897394.png)
(选择二项)
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41.
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0005000/0004043/4043_1460857540114.png)
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42.
![](http://exam.bdqn.cn/cdn/getImage?relativePath=0004000/0003608/3608_1460857228978.png)
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44.
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50.
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