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4-1-4-1 坐标法画轴测图，适用于绘制 、 类物体。
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举一反三
【简答题】If people need to be on-line all the time, it is the most appropriate choice for mobile users to use____transmission.
【简答题】Translation :虽然他聪明机智,也觉得解决这个问题很难。
【简答题】由于起动机起动时间很短，起动机可以最大功率运转，因此将其最大功率作为（）功率。
【简答题】In order to grow, to travel new roads, people need to have a willingness to take risks, to confront the unknown, and to accept the possibility that they may “fail” at first. How we see ourselves as we...
【简答题】Potassium dichromate and potassium permanganate have over lapping absorption spectra in 1mol·L -1 H 2 SO 4 . K 2 Cr 2 O 7 has an absorption maximum at 440nm，and KMnO 4 has a band at 545nm. A mixture i...
【单选题】If people don’t bother to _____ the skills they need to succeed, their future will be hopeless.
A.
acquire
B.
enquire
C.
require
D.
inquire
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