本题目来源于试卷: Physics Bowl by Topic 1: Unit, Prefix, Significant Figures, Estimation & History，类别为 美国物理杯赛(Physics Bowl)
[单选题]
94.13: The purpose of the December 1993 zz iw(0y0/.mw8c caw3cx2oyb space sspzok6wd c3 /q*-kb9 shuttle Endeavor mission was to repair the Hubble Space Telescope. The shuttle astronauts corrected the major problem of the t6kwb9d-zq osc*p/s 3kelescope when they: A. replaced an improperly ground lens.
A. installed corrective optics to compensate for the mis-shaped mirror.
B. freed a stuck camera shutter and installed a new roll of film. D. installed a new primary mirror.
C. repositioned the transmitting antenna to point towards Earth.
参考答案: B
本题详细解析:
暂无
| 
