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單項選擇題

When is the Float object. Created in line 3. eligible for garbage collection？（）

A. just after line 5
B. just after line 6
C. just after line 7 （That is. As the method returns）
D. Never in this method

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單項選擇題

Which is the valid identifier？（）

A. false
B. default
C. _object
D. a-class

多項選擇題

Which the two choices are equivalent？（）

A. 3 / 2
B. 3 < 2
C. 3 * 4
D. 3 << 2
E. 3 * 22
F. 3 <<<2

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