机床误差主要由主轴回转误差、导轨导向误差、内传动链的误差及主轴、导轨等的位置误差所组成。
参考答案:对
The teacher took ____ the lesson where she stopped and finally she set_____ a few minutes to let us discuss it.
A.up; up
B.up; aside
C.out; about
D.on; back
毛细血管内增生性肾炎为()
A.急性肾炎综合征
B.慢性肾炎综合征
C.急进性肾炎综合征
D.肾病综合征
E.肾衰竭综合征