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【单选题】
用计算机进行情报检索,属于计算机应用中的( )A.
科学计算
B.
人工智能
C.
信息处理
D.
过程控制
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反馈参考答案：
举一反三
【多选题】S7 1200常用的OB块有
A.
循环调用OB
B.
启动OB
C.
延时中断OB
D.
循环中断OB
E.
硬件中断OB
F.
时间错误中断OB
G.
诊断错误中断OB
【单选题】What does the author conclude.
A.
He is better than his wife at taking care of children.
B.
A child prefers to stay with his/her father.
C.
A man can take good care of children if he gets the experience.
D.
A child prefers to stay with his/her mother.
【单选题】40 What does the author conclude? A He is better than his wife at taking care of children.
B.
A child prefers to stay with his/her father.
C.
A man can take good care of children if he gets the experience
D.
A child prefers to stay with his/her mother.
【简答题】句型转换。 1. He is much taller than his brother.(改为同义句) He is taller_____ _____than his brother. 2. They often come here now.(改为否定句) They_____come here_____. 3. She felt so tired that she couldn't walk fo...
【简答题】判断下列式子是否可用平方差公式 (1)(a+2b)(-a-2b ) ( ) (2) (a-2b)(2b-a) ( ) (3) (2a+b)(b+2a) ( ) (4)- (a-3b)(a+3b) ( ) (5)(-2x+3y)(3y-2x)( )
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