You can handle these exceptions, or you can let them stop execution.
你可以捕捉这些异常，也可以让它停止执行。
Suppose that both the regulating handle and the reversing handle are at the stop position.
假设调节手柄和换向手柄都在停止位置。
Suppose that both the regulating handle and the reversing handle are at the stop position.
假设调节手柄和换向手柄都在停止位置。
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