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[Issue Essay]

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题目:

Analytical!

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答案:

提问:

图发不上来,是一个半圆的隧道然后宽是20 The figure above shows the dimensions of a semicircular cross section of a one-way tunnel. The single traffic lane is 12 feet wide and is equidistant from the sides of the tunnel. If vehicles must clear the top of the tunnel by at least ½ foot when they are inside the traffic lane, what should be the limit on the height of vehicles that are allowed to use the tunnel? A. 5½ ft B. 7½ ft C. 8 ½ ft D. 9½ ft E. 10 ft

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解答: sysadmin

提问:

求解

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解答: sysadmin老师

提问:

有个洗车行,洗一辆车是 8 块,一个天能挣 200 元。然后打算加价,但是每增加 0.5块,就会减少 10 个顾客,问公式表达收入。答案有 200+(p-8)*0.5/10; 200+(p- 8)*10/0.5; 200-(p-8)*0.5/10 之类的。 感觉上面的答案不对

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解答: sysadmin老师

提问:

机经课上没有讲的几何

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解答: sysadmin老师

提问:

请问

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解答: sysadmin老师

提问:

请教老师

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解答: sysadmin老师

提问:

请问老师

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解答: sysadmin老师

提问:

请问老师

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解答: sysadmin老师

提问:

请问

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解答: sysadmin老师

提问:

请问

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解答: sysadmin老师

提问:

请问

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解答: sysadmin老师

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