问题
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The amount of fluid friction or internal friction inherent in a mineral lubricating oil is
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How many gold miners took part in the strike in South Africa?A.18, 000.B.80, 000.C.60, 000
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The recent discoveries of rare minerals in the Mrima Hills in Kwale______.A.caused a dispu
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After ______ Himalayas, I think ______ Andes are the highest chain of mountains in the wor
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The process of rescuing trapped miners is slow due toA.the difficulties of getting down in
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A.Rich people are not happy.B.Being rich is the best thing in the world.C.Being rich i
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