更多"Space is filled with radiant energy"的相关试题:
[单项选择]Space is filled with radiant energy and beyond earth’s atmosphere this energy flow steadily and intensely from the sun. An abundant and essential (67) of energy would be used in space by developing satellite solar (68) stations. To live in space, humans must be protected (69) the fierce intensity and penetrating sunlight. The colony will have to have enough energy to (70) a fairly uniform temperature. The sun is not dimmed (71) an atmosphere. Shaded materials not (72) to direct sunlight will almost be absolute zero, while the temperature can soar above the (73) point. The colony will need to have both heaters and (74) Fortunately, sun’s energy can be converted (75) electricity. Converting sun’s energy, we would (76) stations in the space that would intercept (77) sunlight. The stations intercept enough sunlight to (78) five nuclear reactors and they could
A. treasure
B. property
C. resource
D. source
