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【单选题】
中央民族工作会议要求，各族干部群众牢固树立“三个离不开”的思想。“三个离不开”思想着重强调的是（ ）。A.
坚持“四个认同”
B.
坚持民族进步
C.
坚持走中国特色社会主义道路
D.
坚持民族团结
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举一反三
【单选题】The separation of impurities and water from ______is essential for good combustion of diesel engines.
A.
lube oil
B.
fuel oil
C.
turbine oil
D.
grease
【简答题】A．He can't find good subjects to photograph. B．His indoor shots are too dark. C．His pictures are often blurry. D．His camera is too big for good detail.
【简答题】通常,root的主目录为_______________。
【单选题】_______he retires, Prof. Baker will have taught in the university for almost forty years.
A.
By this time
B.
At the time
C.
At the same time
D.
By the time
【单选题】The separation property refers to the conclusion that
A.
the determination of the best risky portfolio is objective, and the choice of the best complete portfolio is subjective.
B.
the choice of the best complete portfolio is objective, and the determination of the best risky portfolio is objective.
C.
the choice of inputs to be used to determine the efficient frontier is objective, and the choice of the best CAL is subjective.
D.
the determination of the best CAL is objective, and the choice of the inputs to be used to determine the efficient frontier is subjective.
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