皮皮学，免费搜题
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【单选题】
在单元格内输入学号010001应如何输入( )A.
010001
B.
^ 010001
C.
" 010001
D.
‘010001
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】A vertical line at any point on the earth’s suce is the line that follows the direction of gravity at that point.
【简答题】主减速器的功用是降速，增扭，在发动机（）时，具有改变扭矩方向的作用。
【简答题】A horizontal plane at a point is the plane that is perpendicular to the vertical line at the point.There is only one horizontal plane through a given point.
【单选题】[7-41]The ___is the point at which a vertical line through the heeled ship’s center of buoyancy intersects with the vertical line throu
A.
metacenter
B.
center of buoyancy
C.
Center of gravity
D.
center of flotation
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