【简答题】Mikhail Gorbachev is _______________ with helping to bring about the end of communism in Europe. (achieving, assisted, compute, credited, evaluated, instituted, obtained, primary, residents, site)
【简答题】A 16cm diameter open cylinder 27cm high is full of water. Compute the rigid-body rotation rate about its central axis, in r/min, (a) for which one-third of the water will spill out and (b) for which t...