问题
单项选择题
未经气动预供油泵控制，压缩空气便能直接进入气路，驱动气动马达运转，这说明柴油机（）。
A.压缩空气压力不足
B.油控阀失灵
C.气控阀失灵
D.压缩空气含水
答案
参考答案：B
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未经气动预供油泵控制，压缩空气便能直接进入气路，驱动气动马达运转，这说明柴油机（）。
A.压缩空气压力不足
B.油控阀失灵
C.气控阀失灵
D.压缩空气含水
参考答案：B
| 情景交际。选择方框中的句子完成对话，其中有两项多余。 | |
| He Jing: What do you often do in your spare time? Wei Han: __1__ He Jing: It's great! But I can't play the piano. I can play the guitar. Wei Han: __2__ He Jing: I like pop music. What about you? Wei Han: I also like it. __3__ I like folk music best. I'm Tenger's fan. I like singing all of his songs. He Jing: I know little about folk music, but I enjoy listening to Song Zuying's songs. Wei Han: __4__ He Jing: Yes, I like them. My favorite English song is Yesterday once More. Wei Han: __5__ But I prefer Take Me to Your Heart.
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