问题
单项选择题
使用自动填充方法输入数据时，若在A1输入2，A2输入4，然后选中A1：A2区域，再拖动填充柄至F2，则A1：F2区域内各单元格填充的数据为（）。
A、A1：F1为2，A2：F2为4
B、全0
C、全2
D、全4
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
使用自动填充方法输入数据时，若在A1输入2，A2输入4，然后选中A1：A2区域，再拖动填充柄至F2，则A1：F2区域内各单元格填充的数据为（）。
A、A1：F1为2，A2：F2为4
B、全0
C、全2
D、全4
参考答案：A
Umbrellas are common in our daily life. On rainy days, many people hold them to prevent the 36 . But it’s not easy to hold an umbrella if there is heavy rain and 37 wind. And it’s harder to make a phone call or ride a bike 38 an umbrella in the hand. An American named Alan Kaufman and his company spend 6 years inventing a hand-free umbrella. 39 , they made it. They called it Nubrella. Just touch a button（按钮），and the Nubrella will open 40 With the help of its “shoulder support（支持）”,the umbrella can rest on the user’s shoulders. So the user needn’t hold the umbrella any more. He can walk with hands 41 even in the strong wind. The hand-free umbrella is $ 59.94 each. People all around the world like it very much. Because of this smart 42 ,they can use their phones to talk and send short messages in the rain now. 43 in the rain under a Nubrella is really cool, isn’t it?
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=0.10V-1时，外电路处于 状态。（选填“通路”、“断路”或“短路”）。