![](https://lstatic.shangxueba.com/sxbzda/h5/images/m_q_title.png)
[主观题]
David hardly needed any encouragement to visit the sea, since it still______ for him the h
appiest memories.
A.defied
B.magnified
C.evoked
D.mediated
![](https://lstatic.shangxueba.com/sxbzda/h5/images/tips_org.png)
A.defied
B.magnified
C.evoked
D.mediated
第6题
空气流动的速度为U0=25m/s,温度为15°,流过一块与流动方向平行的极薄的平板,已知空气在该温度时的运动黏滞系数ν=15×10-6m2/s,求离平板前缘0.2m和1.0m处的边界层厚度。如果平板长L=2.0m,试求平板上的阻力系数。
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