皮皮学,免费搜题
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搜题
【单选题】
一弹簧振子作简谐振动,当其偏离平衡位置的位移的大小为振幅的1/4时,其动能为振动总能量的
A.
7/16
B.
9/16
C.
13/16
D.
15/16
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A.
$34,100
B.
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C.
$18,975
D.
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A.
正确
B.
错误
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A.
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B.
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C.
Given one more hour; preparing
D.
If I have one more hour ; prepared
【多选题】网站运营基本流量分析系包括( )
A.
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B.
UV统计
C.
关键词
D.
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A.
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B.
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【单选题】以下哪些不是磁疗的适应证:
A.
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B.
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C.
颞领关节功能紊乱
D.
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