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【简答题】
Mona has an interesting hobby. She collects stamps. She spends a lot of time on her stamp collection after school hours. 小题1: They are all in color. Mona likes stamps with pictures of animals and birds on them. 小题2: She also borrows books on animals and birds from her school library. She learns many things about them. Sometimes Mona has many stamps of the same kind. She gives them to her classmates. 小题3: Mona writes to her friends in many countries. 小题4: In return, they send her stamps of their countries. Mona’s father also gives her stamps. He brings them home from his office for her and he often enjoys the stamps with her. But Mona’s mother never gives her stamps because she thinks spending too much time on it is bad for study. Many of Mona’s friends collect other things. 小题5: But, all of them say that Mona’s collection is the most interesting of all. A. They give her other stamps in return. B. She has collected hundreds of stamps from all over the world. C. She sends them stamps of her country. D. In this way, she learns the names of many animals and birds. E. Some collect coins and others collect match boxes.
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举一反三
【单选题】过度训练处理的关键是 。
A.
减少运动负荷
B.
早期发现,及早处理
C.
控制训练强度和时间
D.
减少速度和力量练习
【简答题】各变量值与其(    )平均数离差平方之和为最小值。
【单选题】若 f(t) F(s) , Re[s]> s 0, 且有实常数 t0>0 , 则( )
A.
f(t-t0) e (t-t0)e -st0 F (s)
B.
f(t-t0) e (t-t0)e -st0 F (s) , Re[s]> s 0
C.
f(t-t0) e (t-t0)e st0 F (s) , Re[s]> s 0
D.
f(t-t0) e (t-t0)e -st0 F (s) , Re[s]>0
【判断题】各变量值与其算术平均数离差之和为最小,各 变量值与其算术平均数离差平方 和为 0 。
A.
正确
B.
错误
【多选题】过度训练处理的关键是( )。
A.
科学选材
B.
训练适量
C.
体质测试
D.
早期发现
E.
及早处理
【判断题】各变量值与平均数离差平方和为最小。
A.
正确
B.
错误
【单选题】过度训练处理的关键是()。
A.
停止训练
B.
药物治疗
C.
早期发现,及早处理
D.
按摩和医疗体育
【判断题】各变量值与其算术平均数的离差平方和为最小值。(    )
A.
正确
B.
错误
【简答题】在使用 MOV 指令时,如果要求在控制触点接通瞬间,完成一次数据传输,应采用什么方法?画出梯形图。
【判断题】各变量值与平均数离差平方之和为最小。(    )
A.
正确
B.
错误
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