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【单选题】
(第3单元)河北满城汉墓出土的( ),为汉武帝祖母使用,是汉代灯具的杰出代表作品。A.
B.
C.
树形灯
D.
长信宫灯
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反馈参考答案：
举一反三
【单选题】In conclusion, the author emphasizes the fact that ( ).
A.
he owes much of his success in career to his family's good name
B.
he always look up to the family's good reputation as treasures inherited from his parents
C.
he and his children always cherish the family's good name and try hard to live up to it
D.
he is still held in respect when he is back in his hometown
【简答题】蓄电池的充电方法有: 、 、 。 车上发电机对蓄电池的充电属于 。
【简答题】电动汽车蓄电池的充电方法可以分为 充电方法和 充电方法。
【简答题】一加法器同时收到20个噪声电压V k (k=1，2，…，20)．设它们是相互独立的随机变量，且都服从区间(0，10)上的均匀分布，求20个噪声电压总和大于105的概率。
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