The first two lines of assembly code at B0 and B5 load the instance reference from memory location 049388C8 into eax and test for null.

B0和B5 处的前两行汇编代码将 instance引用从内存位置 049388C8 加载至eax 中，并进行 null 检查。

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The first two lines of assembly code at B0 and B5 load the instance reference from memory location 049388C8 into eax and test for null.

B0和B5 处的前两行汇编代码将 instance引用从内存位置 049388C8 加载至eax 中，并进行 null 检查。

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