机床调平后，垫铁组伸入机床底座底面的长度不应超过地脚螺栓的中心，垫铁端面应露出机床底面的外缘。
参考答案：错
用所给词的适当形式填空。
1. She feels good about_________ (help) others.
2. _________( eat) too much sugar is bad for your teeth.
3. __________( thousand) of tourists want to visit the beauty of Chengdu.
4. The food tastes____________(well). How delicious !
5. Tea wasn't __________ (bring) to the western world until 1610.
栖庭花苑内有一个半径为3米的圆形花坛，现要在花坛的一周铺上一条l米宽的石子路，好让人们来赏花．这条石子路的面积是多少平方米？
