A ship sails from 179ºE to 179ºW. Meanwhile, the other ship sails from 1ºE to 1ºW, which one is correct of the following choices______:
A: Both the magnitude and direction of D'long for the two ships are equal
B: Both the magnitude and direction of D'long for the two ships are unequal
C: The magnitudes of D'long for two ships are equal, but the directions of D'long are unequal
D: The magnitudes of D'long for two ships are unequal, but the directions of D'long are equal
A: Both the magnitude and direction of D'long for the two ships are equal
B: Both the magnitude and direction of D'long for the two ships are unequal
C: The magnitudes of D'long for two ships are equal, but the directions of D'long are unequal
D: The magnitudes of D'long for two ships are unequal, but the directions of D'long are equal
举一反三
- As long as two forces have the same magnitude and are in opposite directions, these two forces form a couple.
- As long as two forces have the same magnitude and are in opposite directions, these two forces form a couple. A: 正确 B: 错误
- The road is _________. A: two thousand and five hundred metres long B: two thousands metres long C: long one thousand five hundred metre D: thousand and five hundreds metres long
- One day on the moon is ______. A: two Earth week long B: two Earth weeks long C: two Earth weeks longer D: two Earth weeks length
- A: How ______ is it from here to Beijing?B: It's about _______ flight. A: long; two hours' B: far; a two-hour C: long; a two-ours D: far; two hours'