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【单选题】
当列车牵引力等于阻力时,列车处于( )运行状态。A.
减速
B.
加速
C.
匀速
D.
惰性运行
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【简答题】如何删除PPT最近使用过的演示文稿的标题
【简答题】功率小，泄露率低，密封性能可靠，使用寿命长而被广泛应用于各个技术领域的轴封形式是（）
【简答题】在PPT中选择多个演示文稿同时打开，怎么设置？
【单选题】The peasants in India call for a reform. on land ownership because ______.
A.
they do not have enough fields to support their families
B.
their interests are severely infringed by the fast expansion of urban areas
C.
their rights to own a piece of land have been taken by the government
D.
they are losing land without getting any money from the government
【简答题】We sometimes call the lion “the king of the jungle” Because it is stronger and more erous than other animals. 小题1: It is the highest animal in the land food chain. In the sea,the shark is one of t...
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