單項(xiàng)選擇題

A.Compilation fails.
B.An exception is thrown at runtime.
C.The variable first is set to null.
D.The variable first is set to elements[0].

你可能感興趣的試題

A.1
B.2
C.12
D.Compilation fails.
E.No output is produced.
F.An exception is thrown at runtime.

A.2
B.24
C.234
D.246
E.2346
F.Compilation fails.

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