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【多选题】
复制图层的方法有哪些?
A.
鼠标右键点击图层，有复制图层选项
B.
按住shift，用鼠标拖拽图层，可以复制当前图层
C.
按ctrl+a，可以复制当前图层
D.
按住alt，用鼠标拖拽图层，可以复制当前图层
E.
按ctrl+j，可以复制当前图层
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举一反三
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【单选题】On the afternoon of April 19th, 1587, Sir Francis Dr. Ake led his convoy of 31 ships into the port of Cadiz, (1)_____ the Spanish navy was being prepared to (2)_____ England. The Spanish were (3)_____...
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【单选题】On the afternoon of April 19th, 1587, Sir Francis Dr. Aka led his convoy of 31 ships into the port of Cadiz, (1)_____ the Spanish navy was being prepared to (2)_____ England. The Spanish were (3)_____...
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where
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【单选题】______ is NOT a novel of Francis Scott Fitzgerald.
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【多选题】对肖脱基效应理解正确的是()
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灯丝加热电流If和加速电压Ua都对金属中的电子逸出起到助推的作用
B.
在灯丝加热电流If一定的情况下,加速电压越大,逸出的电子就越多
C.
外加速电压Ua的存在是为了消除空间电荷滞留,使热发射现象连续进行
D.
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相关题目：
【判断题】法国科学家帕斯卡(B. Pascal)于1642年发明了齿轮式加减计算器
A.
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【单选题】On the afternoon of April 19th, 1587, Sir Francis Dr. Ake led his convoy of 31 ships into the port of Cadiz, (1)_____ the Spanish navy was being prepared to (2)_____ England. The Spanish were (3)_____...
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查看完整题目与答案
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A.
正确
B.
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【单选题】On the afternoon of April 19th, 1587, Sir Francis Dr. Aka led his convoy of 31 ships into the port of Cadiz, (1)_____ the Spanish navy was being prepared to (2)_____ England. The Spanish were (3)_____...
A.
where
B.
when
C.
as
D.
which
查看完整题目与答案
【单选题】______ is NOT a novel of Francis Scott Fitzgerald.
A.
Tender Is the Night
B.
Anna Christie
C.
The Beautiful and Dammed
D.
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查看完整题目与答案
【多选题】对肖脱基效应理解正确的是()
A.
灯丝加热电流If和加速电压Ua都对金属中的电子逸出起到助推的作用
B.
在灯丝加热电流If一定的情况下,加速电压越大,逸出的电子就越多
C.
外加速电压Ua的存在是为了消除空间电荷滞留,使热发射现象连续进行
D.
外加速电压Ua的接入并没有影响到金属中热发射电子的数量
查看完整题目与答案