电源的等效变换仅对 电路适用，其电源 部是不等效的
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Listen to the conversation and then choose the best answers.
A. Because they can be collected and analyzed.
Because they can be sent on a different route.
C. Because they can be sent back to space.
D. Because they can potentially destroy our planet.
Listen to the conversation and then choose the best answers.
Albert Einstein.
B. Christopher Columbus.
C. Neil Armstrong.
D. Henry Ford.
性别敏感的预算分析工具包含有5个步骤。（）
A. 对
B. 错
选择错误的启动EXCEL2016系统的步骤( )
A. 单击桌面上“我的电脑”按钮,然后选择“程序”选项
B. 选择“程序”菜单中“Microsoft Excel”选项,显示Microsoft Excel 2016 工作画面
C. 通过双击桌面上的快捷方式图标启动Excel 2016
D. 双击任何一个已有的Excel工作簿
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