A、<span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 14px"><strong>两心重合</strong></span>
B、<span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 14px"><strong>两心越远越好</strong></span>
C、<span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 14px"><strong>两心平行放置</strong></span>
D、<span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 14px"><strong>两心垂直放置</strong></span>
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