[填空题]
Suppose a fusion reactor rje:i-xpz+m-fclaw 0u.dq(( nan b86edb m)rid ou/c64 hon "d-d" reactions, Eqs. 31-8a and b. Estimate how much water, for fuel, would be needed per hour to run a 1000-MW reactor, assuming 30% efficieb4c6d68obm uih) rd /ency. $\approx$ $kg/h$