档号
参考答案:
是档案室在档案整理过程中对档案的编号,通常包括:全宗号、目录号、卷号、件号和页号。
_____ make the cakes, you should prepare some flour and eggs.[ ]
A. In order to
B. So as to
C. In order that
D. So that
美国医学物理学家学会(AAPM)规定加速器机头旋转等中心误差()。
A.φ0.2mm
B.φ1mm
C.φ1.5mm
D.φ2mm
E.φ2.5mm