40.
如图,A、B是赤道与圆的两个交点,其直线距离为R(R为地球半径),若右图是以赤道某点为中心的侧视图,图中各点的经线恰为10月12日的范围,则北京时间为
A.12日16∶00时
B.13日16∶00时
C.11日20∶00时
D.11日0∶00时
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