The flag is white red.[ ]
A. but
B. and
C. so
D. inside
答案:B
MRP的中文表述为()
A.主生产计划
B.制造资源计划
C.物料需求计划
D.企业资源计划
I hear our teacher will be back three weeks' time.
A.at
B.in
C.for
D.after