【单选题】Ever since Uranus was discovered in 1781, astronomers have thought there might be more planets to be discovered in the Solar System. Because of small deviations in the orbits of Uranus and Neptune - d...
A.
From the fact that the old data is inaccurate, it cannot be inferred that the calculated orbits are wrong.
B.
From the fact that the data about the orbits is old it cannot be inferred that it is inaccurate.
C.
From the fad that deviations occur which would occur if Planet X existed, it cannot be inferred that Planet X exists.
D.
From the fact that the calculated orbits are wrong, it cannot be inferred that Uranus and Neptune will deviate from them.
E.
From the fact that Planet X has not been discovered, it cannot be inferred that the search for it is futile.
【单选题】What change will the test probably bring to the speakers?
A.
They ll exercise more.
【简答题】下列选项中不属于工程概况内容范围的是( )。
【单选题】At school we take exercise for an hour every day to build us up .
【单选题】变压器和电机的磁路中起主要作用的是( )。
【简答题】求曲线 在xoy 坐标面上的投影曲线的方程,并指出原曲线是什么曲线?
【单选题】点击播放听力音频:
C.
Eat less and do moreexercise.
D.
Change himself and behealthier.
【单选题】To pick up as soon as possible, Tom was advised to do exercise ________ a change in diet.
【简答题】求曲线 在xoy 坐标面上的投影曲线的方程,并指出原曲线是什么曲线?