第11题: [单项选择]What can you infer from it A. 2:14 B. 2:16. C. 2:30. 参考答案:C 答案解析:[听力原文] F: You must hurry up. There is only 14 minutes left for the meeting. M: Oh It’s alrea
第29题: [单项选择]周调节所需库容为日调节库容的()倍。 A. 1.15~1.5 B. 1.15~2.0 C. 1.15~2.5 D. 1.15~3.0 参考答案:B 答案解析:日调节库容较小,一般仅需设计枯水年枯水期日平均发电流量乘以10h的库容,周调节所需库容约为日调节库容的1.15~2.0倍。