在弯曲模具中，如何防止压弯过程中的偏移现象？
某种材料全年的消耗总额为54万元，资金周转期为20天，其资金占用量为（）万元。 ["0.15","2.7","3","6"]
A mortgagee only（）entitled to all the freight which the ship is in the course of earning，when his possession of the ship comes into being. ["sustains","maintains","becomes","ha"]
拜访的礼仪应注意哪些方面？
冲压生产中减少回弹的立法和措施有哪些？
为提高压弯时坯料定位的可靠性，可采用哪些措施？
