加工中心的成型铣刀形状精度直接影响工件的尺寸精度。
参考答案:错
电子钱包中存放的主要是()
A.现金
B.电子现金和电子信用卡
C.电子现金和账户
D.电子现金
The Customs shall reply in writing within ______ from the date of receipt of the application for the refund of the duty paid and notify the applicant of its decision.
A.one month B.two monthsC.three monthsD.six months