铝合金门窗按其结构与开闭方式,可以分为哪些门窗?
参考答案:
铝合金门窗按其结构与开闭方式,可以分为平开门窗、推拉门窗、回转门窗、纱门窗、百叶窗、固定窗、悬挂窗等。
Jack borrowed the tie ______ his father. [ ]
A. to
B. of
C. from
D. by
某企业购买原材料,供应商给出的付款条件是1/20,N/50,则企业放弃折扣的机会成本是()
A.10%
B.11%
C.12%
D.13%