单项选择题

What is head tank in the closed cooling water system used for?
A、for the release of air from the cooling water
B、providing expansion room for heated cooling water
C、a place for implementing water and water treatment agent
D、any of the others

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问答题

超星尔雅学习通《太阳系中的有趣科学(北京大学)》2023章节测试答案-6

答案: C、朱诺的运动轨迹

D、以上选项都不是

正确答案:AC

2.木星辐...
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