(多选)下列加点的物体中,即具有动能又具有势能的是
A弓开如满月···········弓B箭去似流星···········箭C云来云又往···········云D蜻蜓立竿头···········蜻蜓...
A弓开如满月···········弓
B箭去似流星···········箭
C云来云又往···········云
D蜻蜓立竿头···········蜻蜓 展开
B箭去似流星···········箭
C云来云又往···········云
D蜻蜓立竿头···········蜻蜓 展开
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