问题
单项选择题
滚动导轨有下列特点：运动灵敏度高，（）精度高。
A.加工
B.运动
C.定位
D.测量
答案
参考答案：C
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滚动导轨有下列特点：运动灵敏度高，（）精度高。
A.加工
B.运动
C.定位
D.测量
参考答案：C
| 根据句意从方框中选择合适的词，并用其适当形式填空。 | |
2. The books are not Tom's. They are those __________. 3. The little boy looks _________ at us after he sees his parents. 4. There are at _________ thirty-two classrooms in our school. 5. These Chinese _________ cost 50,000 yuan. |