Nuclear rockets, in contrast to their chemical
举一反三
- Nuclear rockets, in contrast to their chemical 17）________, could impart a maximum speed of up to about 22 kilometers a second.
- Weapons of mass ______ must be banned, such as nuclear weapons,<br/>chemical weapons, etc. A: humanity B: dictation C: destruction D: bubbles
- The ancient Egyptians are supposed ______ rockets to the moon.
- Rockets have found application for the exploration of the universe.
- 如何控制住火箭的动力，是成功发射宇宙飞船的一个关键。 A: How to harness the power of the rockets, which is the key to the successful launch of a spaceship. B: How to harness the power of the rockets, it is the key in the successful launch of a spaceship. C: How to harness the power of the rockets is the key to the successful launch of a spaceship. D: How to harness the power of the rockets is the key in the successful launch of a spaceship.