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【简答题】
在平面直角坐标系xoy中，给定三点 ，点P到直线BC的距离是该点到直线AB，AC距离的等比中项。（Ⅰ）求点P的轨迹方程；（Ⅱ）若直线L经过 的内心（设为D），且与P点的轨迹恰好有3个公共点，求L的斜率k的取值范围。
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【单选题】（）is a term that covers a great variety of goods that must be loaded individually,and not in intermodal container nor in bulk as with oil or grain.
A.
General cargo
B.
bulk cargo
C.
Container
D.
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