【单选题】In DAT contracts, a reasonable order or time of shipment and time of delivery is _______.
【单选题】We at Deluxe Shipping guarantee that your packages will arrive on the ------- delivery date.
【判断题】实际生产中,X62W铣床主轴变速时,首先将主轴变速手柄微微压下,使它从第一道槽内拔出,然后拉向第二道槽。