An interaction in the sequence diagram can be considered as a in a program.
A.
method invocation
B.
message delivered
C.
parameters shared
D.
all not
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参考答案:
举一反三
【判断题】The service staff in the restaurants have direct contact not only with resident guests but with members of the general public who use the hotel facilities other than its sleeping rooms.
【简答题】A.When he eats and drinks in restaurants and bars. B.When he books the hotel room. C.When he wants the bell-boy's help with the luggage. D.When he leaves for personal reasons.