问题
单项选择题
调速器的功能是根据柴油机的负荷变化而自动调节供油量，使（）
A.柴油机的转速基本上保持不变
B.柴油机的转速提高
C.柴油机的转速降低
D.柴油机的转速保持不变
答案
参考答案：A
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调速器的功能是根据柴油机的负荷变化而自动调节供油量，使（）
A.柴油机的转速基本上保持不变
B.柴油机的转速提高
C.柴油机的转速降低
D.柴油机的转速保持不变
参考答案：A
| 用方框中所给单词的适当形式填空，使短文完整正确。(每个单词限用一次) | |
English. Many students said they learnt by using English. Some students had more specific 1 . Zeng Yike, for example said the best way to learn new words was by 2 English magazines. She said that memorizing the words of pop 3_ also helped a little. When we asked about studying grammar, she said, "I never study grammar. It's too 4 ." Yao Ming felt differently. He's been learning English for six years and really 5 it. He thought studying grammar was a great way to learn a language. He also thought that watching English movies wasn't a bad way 6 he can watch the actors say the words. Sometimes, however, he 7 watching movies frustrating. The monitor said that learning English was not 8 . He said that watching English-language TV helped a lot. He 9_ that doing lots of listening practice is one of the secrets of becoming a 10 language learner. |