OPT是()的简称
A.准时制生产
B.企业资源计划
C.制造资源计划
D.最优化生产技术
参考答案:D
The children are always _____ to set off ______ the seaside.
A.excited, to
B.exciting, to
C.excited, for
D.exciting, for
“乐府双璧”指的是()和()。