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【简答题】
选择“自由变换”命令的快捷键是(),对图形进行自由变形操作时,按住() 和()键,可以从中心按比例缩放图像。
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【单选题】FTP服务端口号______。
A.
21
B.
23
C.
53
D.
80
【单选题】From 1649 to 1658 England was called a Commonwealth. It was ruled by Oliver Cromwell as ______
A.
Lord Protector
B.
Lieutenant General
C.
Commander of the New Model Army
D.
President
【多选题】SQL Server中的约束包括__________、____________、___________、____________和_________-五种类型。
A.
主键约束(primary key)
B.
外键约束(foreign ke)
C.
默认约束(default)
D.
唯一约束(unique)
E.
检查约束(check)
【单选题】Demeter is the goddess of __________.
A.
hearth
B.
beauty
C.
harvest
D.
wisdom
【简答题】FTP服务端口号______。A. 21
【单选题】From 1649 to 1658 English was called a Commonwealth. It was ruled first by Oliver Cromwell as______.
A.
President
B.
Lord Protector
C.
Lieutenant General
D.
Commander of the New Model Army
【简答题】词汇  根据句意或提示,写出单词,完成句子。 1. The birthday present he sent me is very (有价值). 2. Millie had no (选择)but to wait for the next trai n yesterday morning. 3. The little boy always (拒绝)to do so much homework eve...
【单选题】昆虫的单眼分为背单眼和侧单眼两类,侧单眼是 所具有。
A.
渐变态的幼虫
B.
渐变态的若虫
C.
完全变态的幼虫
D.
完全变态的若虫
【判断题】要扛稳粮食安全这个重任。确保重要农产品特别是粮食供给,是实施乡村振兴战略的首要任务。()
A.
正确
B.
错误
【判断题】膜分离法中允许溶质透过膜的过程称为渗透。
A.
正确
B.
错误
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