【单选题】Usually, it is the shipper’s duty to ______ delivery of the goods on time and the consignee has to ______ delivery at the destination when the goods arrive.
【单选题】Message delivery is the communication method between objects. An object request services from another object by sending messages. A message usually includes: ________
A.
message-sender ’ s identification, operation name and necessary parameters
B.
the class names of message-sender and message-receiver
C.
message-receiver ’ s identification, operation name and necessary parameters
【简答题】Mail Delivery Please complete the conversation by filling in the missing words and expressions. (C= Clerk, G= Guest) C: Good afternoon, sir. Is there anything I can do for you? G: Good afternoon> I’d ...