Nuclear rockets, in contrast to their chemical
counterparts
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.
内容
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Nuclear power is the use of nuclear reactions that release nuclear energy to generate _____, which most frequently is then used in steam turbines to produce electricity in a nuclear power plant.
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Which of the following in NOT true of the nuclear envelope? () A: The nuclear envelope is exactly like other cellular membranes. B: The nuclear envelope separates the genetic material from the cytoplasm. C: The nuclear envelope is a pair of concentric membranes. D: The nuclear envelope is studded with pores.
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Rockets perform best in space, where there is no atmosphere to impede their motion.
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nuclear
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After several nuclear disasters, a ________ has raged over the safety of nuclear energy.