单项选择题

做点地转肩动作时，左肩转到前面时，左脚向前点地。 A. 对 B. 错

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单项选择题

两点间的电压大小与参考点的选择有关。
A、正确
B、错误

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In an IT environment, a systems analyst is generally [填空1] for designing systems, preparing specifications for programmers, and serving as an intermediary between users and programmers.

答案： 1、responsible