问题
单项选择题
曲轴磨床工作时，当自第一轴柄移向第二轴曲柄颈时，应回转横梁，将砂轮架（）并将中心加移至第二曲柄颈。
A.左移
B.右移
C.推入
D.退出
答案
参考答案：D
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曲轴磨床工作时，当自第一轴柄移向第二轴曲柄颈时，应回转横梁，将砂轮架（）并将中心加移至第二曲柄颈。
A.左移
B.右移
C.推入
D.退出
参考答案：D
| 完形填空。 | ||||
| On the first day of school, the new teacher had a look at the name list of students. How pleased she was! Guess what she _1__? After each student's name, there was a number __2__ 138,140, 154 and so on. "_3_these high IQ (智商) students." she thought to herself, "They've given me a wonderful _4_!" As a result, the _5_ teacher worked harder with this class than her other classes. She _6_ some new teaching ways. She thought these _7_ would cheer the students and hold their _8_ . She was right. It _9_ out well! The class did much better than any of her others. Later, however, she found out the _10_ : the number after each name did not mean the IQ, but the number of his or her clothing box in the school. | ||||
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