米制普通螺纹的牙型角是多少?
参考答案:
600
1911年,宣布废除宣统年号,建立中华民国的政府是[ ]
A.湖北军政府
B.中华民国临时中央政府
C.护法军政府
D.南京国民政府
The poor boy was ________ by his grandparents.[ ]
A. brought forward
B. brought in
C. brought up
D. brought about