[填空题]
What is the weight of itbo) ;n i, hu1pqz+r2pj4xo3a 21 mga5h.wb--; ujdbz /jdudcs2efg9l1t: pz$76-\mathrm{kg}$ astronaut
(a) on Earth,
(b) on the Moon $\left(g=1.7 \mathrm{~m} / \mathrm{s}^{2}\right)$ ,
(c) on Mars $\left(g=3.7 \mathrm{~m} / \mathrm{s}^{2}\right)$,
(d) in outer space traveling with constant velocity?
