正确地选择（）能使施工方法更为先进、合理、经济。
A.新技术
B.新工艺
C.施工顺序
D.施工机具
参考答案：D
— Do you know if he ______ to play basketball with us?
— I think he will come if he ______ free. [ ]
A.comes; is
B.comes; will be
C.will come; is
D.will come; will be
售票员岗位责任制的主要内容是什么？
