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【单选题】
在楼板上开洞的位置是参考洞口的()点确定的。A.
左上角
B.
C.
右下角
D.
右上角
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【简答题】Still, many people are buying the large, round fruit. Pumpkins are an important part of the American celebration of Halloween on October thirty-first. Many families visit farms or farmers’ markets so ...
【单选题】在图层蒙版中,单独移动蒙版,对的操作是
A.
首先双击图层，然后选择移动工具
B.
用移动工具直接拖拉
C.
首先要解掉图层与蒙版之间的锁，删除图层后即可
D.
首先要解掉图层与蒙版之间的锁，再选择蒙版，然后选择移动工具即可
【多选题】一个单位负反馈系统的开环传递函数为【图片】，试确定系统阶跃响应的动态性能【图片】,【图片】,【图片】。(取【图片】=5%)（ ）
A.
=16.3%
B.
=4.3%
C.
=2.42s , =6s
D.
=1.22s , =8s
【单选题】Not until then _____ their marriage was breaking up because they had little in common.
A.
did I realize
B.
I realized
C.
had I realize
D.
has I realized
【判断题】Carved pumpkins are used to scare away vampires, according to some superstitious people.
A.
正确
B.
错误
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