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【简答题】
若圆 经过坐标原点和点 ，且与直线 相切, 从圆 外一点 向该圆引切线 , 为切点， （Ⅰ） 的方程； （Ⅱ）已知点 ，且 ， 试判断点 是否总在某一定直线 上，若是，求出 的方程；若不是，请说明理由； （Ⅲ）若（Ⅱ）中直线 与 轴的交点为 ,点 是直线 上两动点，且以 为直径的圆 过点 ，圆 是否过定点？证明你的结论.
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举一反三
【单选题】Based on Shakespeare's experience, it is probably true that the members of the Lord Chamberlain's Men______.
A.
performed more than one job
B.
were jealous of each other
C.
could not read or write
D.
were all quite young
【单选题】The author's overall comment on Lord Norwich's book is one of
A.
disapproval.
B.
impartiality.
C.
ambiguity.
D.
extollment.
【简答题】Lord Baltimore who set up the colony of ____ was ___ in religion.
【单选题】以上说法不是刚架优点的是
A.
刚架在荷载作用下,变形较小
B.
刚架在受力后,刚结点所连接的各杆件间角度不变
C.
由于存在刚结点,使刚架中杆件数量较少,内部空间较大
D.
由若干杆件主要用刚结点组成
【简答题】体育与健康学习评价包括:
【简答题】体育与健康学习评价包括:
【简答题】Which colony was created by Lord Baltimore as a place where Catholics could practice their religion safely?
【单选题】Lord Baltimore's feudal plan failed because of several factors except _______
A.
there were more Protestants than Catholics in Maryland
B.
the wilderness of the continent made the plan impossible
C.
there was plenty of land while labor was scarce
D.
the English King did not like the plan
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