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Click the Exhibit button.   What is the result？（）
A: The code will deadlock.
B: The code may run with output "2 0 6 4".
C: The code may run with no output.
D: The code may run with output "0 6".
E: An exception is thrown at runtime.
F: The code may run with output "0 2 4 6".

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出自：Oracle认证

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