洞口路堑等开挖与明洞洞顶回填的土石方,不分土、石的各类,不区分为土方和石方,以立方米计量。()
参考答案:错
J2EE为搭建具有可伸缩性、灵活性、______的商务系统提供了良好的机制。
--- Bill, can I get you anything to drink?
--- _________.
A.You are welcome
B.No problem
C.I wouldn't mind a coffee
D.Doesn’t matter