A good source of energy is one : (i) which would give a large amount of energy per unit mass (or per unit volume) (ii) Which is cheap and easily available (iii) which is easy to store and transport (iv) Which is safe to handle and use, and
【题目】The two graphs show the main sources of energy in the USA in the 1980s and the1990s.Write a report for a university lecturer describing the changes which occurred.Wrte at least 150 words.26%19801990oilnatural gascoalhydroelectric powernuclearpowerThe graph below shows electricity ...
Distributor, between two sources of energy of an internal combustion engineThe carburettor (1) and the mixer (2) are connected to the intake manifold (3) by means of outlets having an accelerator throttle (4, 5). Connecting rods (8, 9) connect the throttles (4, 5) to a control lever...
如图所示 The two graphs show the main sources of energy in the USA in the 1980s and the 1990s Write a report for a university lecturer describing the changes which occurred. Wite at least 150 words 10% 33% 22% 42% 26% 25% 1980 1990 oil natursl gas cosl hydroelectric power nuclear po...
Fat is a concentrated source of energy. 脂肪是能量的主要来源, It can be divided into two main groups—saturated and unsaturated. 它有饱和与不饱和两大类。 Saturated fat is generally solid at room temperature and is usually from animal sources. 饱和脂肪在常温下是固体,通常来源于动物。 It's fou...
1、You should spend about 20 minutes on this task.The two graphs show the main sources of energy in the USA in the 1980s and the 1990s.Write a report for a university lecturer describing the changes which occurred.Write at least 150 words.model answer:The two graphs show that oil was ...
Answer to: Compare the structures of starch and glycogen and why are both two good sources of energy respectively. By signing up, you'll get...
Two advantages of solar power are that it is a renewable source of energy and it is easy to set up. Renewable sources of energy are energy sources...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can ans...
MALE PROFESSOR: Alright folks, let's continue our discussion of alternative energy sources, and move on to what's probably the most well-known alternative energy source, umm, solar energy.The Sun basically provides Earth with a virtually unlimited source of energy every day, but the problem has...
A. will be B. be C. are D. were 相关知识点: 试题来源: 解析 A。“In two weeks”是将来时间,句子表示将来某个时间正在进行的动作,用将来进行时。B 选项 be 动词不能单独使用;C 选项是现在进行时;D 选项是一般过去时。反馈 收藏