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【判断题】
如果作用在质点上的外力对定点o的力矩为零，则质点对o点的角动量在运动过程中保持不变。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】什么是钢筋的冷拉 ,优点是什么 ?
【单选题】She was considered______of a hero in the town.
A.
something
B.
sometimes
C.
somewha
D.
some
【简答题】六大茶山一般指云南茶叶或普洱茶六大古茶山,位于( )内。
【简答题】十五大报告明确指出:“实践证明,作为思想的继承和发展的理论,是指导中国人民在改革开放中____的正确理论。”
【简答题】根据句意、汉语提示或首字母和英文释义写出单词的正确形式。 1. —I don’t like this CD-ROM. —Me_________(也). 2. Have you_________(回复) to his letter? 3. China Daily is a_________(窗口)for foreigners to know about China. 4. It is said...
【单选题】听力原文：M: I'd like to book a few seats for 'Hamlet', please. W: Yes, sir. M: Have you got any seats downstairs? W: Yes, we have. M: How much are they? W: $3.75 each. M: Are there any seats for $2.50? W:...
A.
Because the seats are too expensive.
B.
Because the seats are too close to the stage.
C.
Because the seats are uncomfortable.
【单选题】听力原文：M: I'd like to book a few seats for' Hamlet', please. W: Yes, sir. M: Have you got any seats downstairs? W: Yes, we have. M: How much are they? W: $3.75 each. M: Are there any seats for $2.50? W:...
A.
Too expensive.
B.
Too close to the stage.
C.
Uncomfortable.
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