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【简答题】
流动阻力指流体在运动过程中,边界物质施加于流体且与流动方向相反的一种作用力。阻力损失起因于粘性流体的内摩擦造成的( )和物体前后压强差引起的( )。
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【单选题】16 In this example, assume that both trade and production factors are internationally mobile. Using domestic labor, the labor cost per silicon chip is $.10 in Japan and $.20 in the United States. Usin...
A.
those made in Japan with Japanese labor and capital
B.
those made in the United States with U.S. labor and capital
C.
those made in Japan with Japanese labor and U.S. capital
D.
those made in the United States with Japanese labor and U.S. capital
【简答题】诚之是指（ ）