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【简答题】 1 . What did Brenda have to do in order to play the drums in a band?(Para.1)
【简答题】What did Brenda have to do in order to play the drums in a brand? She had to .
【简答题】What did Brenda have to do in order to play the drums in a band?
【简答题】What did Brenda have to do in order to play the drums in a band? (Para. 1) She had to _____________________.
【简答题】根据麦克斯韦速率分布函数，计算足够多的点，以为纵坐标，υ为横坐标,作1mol氧气在100K和400K时的分子速率分布根据麦克斯韦速率分布函数，计算足够多的点，以dN/N为纵坐标，υ为横坐标,作1mol氧气在100K和400K时的分子速率分布曲线．
【单选题】麦克斯韦速率分布函数 的物理意义是:它是气体分子速率
A.
处于υ附近单位速率区间的概率
B.
处于υ附近的频率
C.
处于υ~υ+dυ速率区间内的概率
D.
处于υ~υ+dυ速率区间的分子数占总分子数的比率
【简答题】What did Brenda have to do in order to play the drums in a band? (Para. 1)
【单选题】一健康男孩,体重10.5Kg,身长80cm,出牙12颗,前囟已闭,胸围大于头围,其月龄最可能是
A.
9个月
B.
12个月
C.
18个月
D.
20个月
E.
24个月
【简答题】What did Brenda have to do in order to play the drums in a band? (Para. She had to _____________________ .
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