题目内容

什么是动力刀塔？

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动点的牵连速度是指该瞬时牵连点的速度，它所相对的坐标系是

A. 动坐标系
B. 定坐标系
C. 不必确定的
D. 定、动坐标系均可

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牵连运动是以定系为参考体所观察到的动系运动

A. 对
B. 错

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动系相对于定系的速度为牵连速度。

A. 对
B. 错

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Which of the four aspects of differences was embodied in the following translation?[洞庭湖衔远山，吞长江，浩浩荡荡，横无际涯。][Carrying distant mountains in the mouth and swallowing the Yangtze River, the vast mighty Dongting Lake stretches endlessly.]

A. Chinese tourist texts are more flowery.
B. Chinese tourist texts tend to quote ancient poems or use classic allusions.
Chinese sentences are loose in structure.
D. Chinese tourist texts are inclined to use “end focus”.

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