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【单选题】
流体力学中常用什么表示流体的重力( )A.
密度
B.
C.
比容
D.
重度
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S he is a doctor
B.
She was watching TV
C.
She was a teacher
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A.
它是针对解放前朱光潜美学思想的批判
B.
它的中心问题是 “ 美是什么 ” 。
C.
这次美学讨论形成了对美的一致看法和完整体系。
D.
蔡仪认为美是客观的
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A.
will visit
B.
has visited
C.
is going to visit
D.
would visit
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A.
王沪宁
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赵乐际
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韩正
【单选题】如果圆 x 2 + y 2 + Dx + Ey + F = 0( D 2 + E 2 - 4 F >0) 关于直线 y = x 对称,则有 ( )
A.
D ＋ E ＝ 0
B.
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A.
will visit
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has visited
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is going to visit
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was going to visit
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A.
喷射音
B.
心包叩击音
C.
心音分裂
D.
奔马律
E.
开瓣音
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【单选题】What did your sister do before?
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