【简答题】空军某部,根据国防需要,须在北部地区建设一雷达生产厂,军方原拟订在与其合作过的施工单位中通过招标选择一家,可是由于合作单位多达 20家,军方为达到保密要求,再次决定在这20家施工单位内选择3家施工单位投标。 问题: ( 1)上述招标人的做法是否符合《中华人民共和国招标投标法》规定? ( 2)在何种情形下,经批准可以进行邀请招标?
【简答题】已知公称尺寸为 35的孔和轴:孔的上极限尺寸为φ35.005mm,孔的下极限尺寸为 φ34.997mm;轴的上极限尺寸为φ34.993mm,轴的下极限尺寸为φ34.985mm。求孔、轴的极限偏差及公差,并画出公差带图 。 注:可以在纸上写出答案拍照上传。
【单选题】'Fixing the self' in the 6th paragraph probably means ______.
A.
staying firm on same position
B.
identifying one's role in a team
C.
standing out in performing important task
D.
excluding others from a team
【单选题】Maximizing profits also means that a firm is attempting to:
A.
. make as much output as possible.
B.
. change the market price.
C.
. produce at the output level where the difference between total revenue and total cost is the greatest.
D.
. produce below its break-even price.
【多选题】支架预压的目的是( )
E.
使桥梁线形符合设计要求,避免箱梁混凝土因支架不均匀沉降出现开裂。
【单选题】The manager ask us to firm order,the firm order means __ __ ?
【单选题】根据《人民防空法》的规定,()根据需要可以组织试鸣防空警报。