SOAP的（）机制和可扩充的Header和Body机制为分布式计算提供了很好的支持。
A.消息等待
B.消息处理
C.消息路径
D.消息接收
参考答案：C
套管鞋处的地层通常是全井最强的部位。（）
---Go and ask the waiter how much_____.
---Don’t worry. It has been _____.
A．does the meal cost, paid for
B．the meal costs, paid
C．the meal spends, paid
D．the meal costs, paid for
