题目内容

航天器进行变轨时，必须维持航天器的姿态稳定。

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By no means would people turn ________ their motherland.

哑铃型三轴气浮台可以绕偏航轴和滚动轴360度自由旋转，这是气浮设备极具意义的创新。

Passage 1: The cat sat down. Still looking at us in that disconcerting way, she tilted her head first to one side and then the other, inquiringly and cogitatively, the way a cat does when she has struck the unexpected and can’t quite make out what she had better do about it. Next she washed one side of her face, making such an awkward and unscientific job of it that almost anybody would have seen that she was either out of practice or didn't know how. (From The Mysterious Stranger by Mark Twain) Passage 1 is an example of subjective description.

当螺旋机构的螺旋导程角选择合适时，机构将具有________功能。