A. 压力机矫正 B. 整体热处理 C. 火焰加热矫正 D. 消除应力退火
A. 50 B. 3 C. 2.5-3 D. 100
A. shipm ent not later than Jan.31 B. shipm ent during April C. shipm ent within 30 days after receipt of L/C D. shipm ent ASAP