问题
单项选择题
( )在中低水头、大流量水电站中得到广泛应用。
A.混流式水轮机
B.轴流式水轮机
C.斜流式水轮机
D.贯流式水轮机
答案
参考答案:B
( )在中低水头、大流量水电站中得到广泛应用。
A.混流式水轮机
B.轴流式水轮机
C.斜流式水轮机
D.贯流式水轮机
参考答案:B
填空题。 | |
2. The boy was ___ by the failure of the exam. 3. We are ___her promotion to president. 4. We___ be late 5. The doctors tried their best to ____ the drowning boy ___. 6. They succeeded in the end and all their efforts ___. 7. At no time has the country been more prosperous than ___. 8. Keepers in Taiwan said the pandas were ___. 9. Day after day she waited ___ for him to give her a gift. 10. I think by doing so he is trying to ___ terror ___. |