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【单选题】
前牙反合,两侧磨牙为中性关系,其错合分类为:
A.
安 II 1 , 毛氏 II 4
B.
安 II 1 , 毛氏 II 2
C.
安 I, 毛氏 II 3
D.
安 I, 毛氏 II 2
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A.
x=-2 y=2
B.
x=-2 y=3
C.
x=-3 y=3
D.
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【单选题】Peter Palumbo, chairman of the Arts Council, said the national companies were so successful commercially that when there was a shortfall in ______ there was little more they could do to raise money.
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【单选题】如图，是在同一坐标系内作出的一次函数l 1 、l 2 的图象，设l 1 ：y=k 1 x+b 1 ，l 2 ：y=k 2 x+b 2 ，则方程组 y= k 1 x+ b 1 y= k 2 x+ b 2 的解是（　　）
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B.
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C.
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D.
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查看完整题目与答案
【单选题】Ice skates manufactured entirely of iron were first sold in the 1800's.
A.
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successfully
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x=6，y=15
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C.
x=3，y=15
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x=6，y= 15 2
查看完整题目与答案