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- 单项选择题A rescue plan could be achieved by sending an unmanned ( ) to the space station. ( 章节:4 难度:4)
A、short course of study
B、satellite
C、module
D、self-contained separable unit
- C
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A、short course of study
B、satellite
C、module
D、self-contained separable unit
关注下方微信公众号,在线模考后查看