题目内容

3.Why can plants also benefit from international trade?

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4.What does comparative advantage refer to?

5. Who would benefit from international trade?

当加计数器输入电路CU由断开到接通,复位输入电路R为1时,计数器的当前值加1。

A. 对
B. 错

加计数器的输入电路CU为1,则当前值加1.

A. 对
B. 错

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