Weeks later the second satellite was ____.
举一反三
- Beidou Satellite Navigation system is a global satellite navigation system developed by China, and it is also the _________ mature satellite navigation system. A: first B: second C: third D: fourth
- Several weeks later, I realized __________ (不是他错了，就是我错了).
- It was already a _____ when two weeks later the police found his stolen car and he had to buy a new one.
- The pregnancy cycle can be divided into （） A: early pregnancy (the first 14 weeks pregnant) B: second trimester pregnancy (from 15 to 28 weeks pregnant) C: late pregnancy (from 29 to 42 weeks pregnant) D: prolonged pregnancy
- Spatial resolution of an image is? A: Can be improved later B: Vary with time C: Fixed once the image is acquired by the satellite D: None of the above