更多"In addition to the established ener"的相关试题:
[单项选择]In addition to the established energy sources such as gas, coal, oil and nuclear, there are a number of other sources that we ought to consider. Two of these are hydroelectric and tidal power.
These two sources are (21) in that they are both renewable. (22) , hydropower is more widely used than tidal. In (23) , a substantial amount of electricity is already produced in HEP (hydroelectric power) stations worldwide, (24) tidal stations are still in the very early (25) of development.
As far as geographical (26) is concerned, HEP projects are to be found on lakes and rivers, while tidal (27) are constructed only at river mouths where tidal (28) is great. Unfortunately these are (29) in number. At present HEP stations are found mainly in Norway, Canada, Sweden and Brazil, whereas tidal plants are in (30) in France, Russia and China.
As regards capital (31)
A. compatible
B. parallel
C. similar
D. identical