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【单选题】
流体质点是指( )。A.
流场中的空间点
B.
流体中的固体颗粒
C.
流体分子
D.
较微观粒子结构尺度大，同时较宏观特征尺寸小的多的流体分子团
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【单选题】What a shame for me when someone standing next to me heard a flute and I heard nothing _____. [ ]
A.
at a distance
B.
about the distance
C.
on the distance
D.
to the distance
【简答题】A: I once heard someone shout, “Look out.” I put my heard out of the window and a bucketful water fell on me. It seems that “Look out” may mean “Don’t look out”. B: I was once on a ship and heard the ...
【简答题】当15号车钩处于闭锁状态时，应（）。
【简答题】原值比例表示图与实物的大小____,比例中,1 :2是____比例。
【简答题】阅读理解 A: I once heard someone shout, 'Look out.' I pu t my heard out of the window and a bucketful water fell on me. It seems that 'Look out' may mean 'Don't look out'. B: I was once on a ship and hear...
【单选题】I ()supper when I()someone knocking at the door.
A.
made . . . Heard
B.
made . . .was heard
C.
was making . . . was hearing
D.
was making . . . heard
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