题目内容

要启动打印机,则要使/STB信号先 再 再 。

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要使得PC0置1,则控制字为 H。

I ______ (finish) all my work before I ______ (leave).

My mother ________ (give) me a nice present on my next birthday.

I am tired. I ______ (go) to bed early tonight.

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