问题
判断题
汽机的推力轴承作用只是承受转子的轴向推力。
答案
参考答案：错
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汽机的推力轴承作用只是承受转子的轴向推力。
参考答案：错
| 选择合适的句子补全对话。 | |
B: No, they aren't. They are donkeys. A: 2______________________________ B: No, they aren't. They are goats. A: 3______________________________ C: No, they aren't. They are ducks. A: 4______________________________ C: Yes, they are. They are hens. |