水泵的效率是指水泵的有效功率与轴功率之比一百分数。
参考答案:对
Canberra is the capital of Australia.It is a modern and lively city with a population of over 345.000.
History
Canberra is the eighth largest city in Australia.It is 238 km from Sydney and 507 km from Melbourne was once the capital of Austualia. Sydney people also wished to make their city the capital .It was difficult for the government to make the decision.Then in 1911,the government chose a place to build the new capital. It was between Sydney and Melbourne,the two largest cities .In 1927,the city was set up. It became the capital and was named Canberra.“Canberra”means“ a place for friends to get together.”
Cuture
Canberra is a beautiful city with trees and flowers everywhere.There’s a Flower Festival in September each year. People can enjoy all kinds of beautiful flowers and welcome the spring to arrive.A man-made like-lake. Bertey Griffin is in the center of the city.It’s about 25 km long. People like to ride bikes 、walk or run around the lake.In Canberra,there’re many famous universities like the Australian National University and the University of Canberra.The National Library and the National Meseum of
Australia are also famous places that people like to visit.
小题1:How far is Canberra from Sydney?
A.25km
B.238km
C.345 km
D.507 km小题2:The word “Canberra”means__.
A.the largest city
B.a beautiful man—made lake
C.the old capital city
D.a place for friends to get together小题3:Canberra Flower Festival is a festival __.
A.ride lakes
B.visit Universities
C.welcome the spring
D.walk around the lake
积极参与社会主义民主政治建设,是我国公民政治生活的有机构成部分。这是因为发展社会主义民主政治()。
A.是社会主义现代化建设的重要目标
B.要坚持党的领导、人民当家作主和依法治国的有机统一
C.依法行使政治权利履行政治义务
D.必须依法实行民主选举、决策、管理和监督