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【单选题】
在OSI 参考模型中,第N层和其上的N+1层的关系是A.
N层为N+1层提供服务
B.
N+1层将为从N层接收的信息增加了一个头部
C.
N层利用N+1层提供的服务
D.
N层对N+1层没有任何作用
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反馈参考答案：
举一反三
【单选题】B. Choose the best answer. 1. Where do your grandparents live?
A.
No, they live in the country.
B.
They lived in the city.
C.
They live in the country.
D.
They used to live in the country.
【简答题】Choose the best answers to the questions you hear. 1) a. 4 b. 5 c. 7 d. 8 2) a. The Companion b. The Collaborator...
【单选题】Choose the best topic sentence.
A.
Each year, people throw away millions of plastic bags.
B.
The pollution from plastic bags is one of the main problems people around the world face today.
C.
Each year, people around the world use about 500 billion to 1 trillion plastic bags.
D.
One solution is to make plastic bags out of sugarcane.
【单选题】He often buys things in our shop. He is a customer to our shop. [ ]
A.
usual
B.
ordinary
C.
regular
D.
common
【单选题】C. Choose the best answer to complete each sentence. 1. The of a big new machine can be hard to learn.
A.
operate
B.
operation
C.
operating
D.
operative
【单选题】Choose the best answer to each of the follow questions. 1.Whichof the following is NOT true about Roger Barta?
A.
He is a high school basketball coach.
B.
His teams have won eight Kansas state championships.
C.
His coaching philosophy has passed on a lot of wisdom to his players.
D.
His coaching philosophy has worked well on the field.
【单选题】Although it is not our normal to give credit in our shop,this time I think we should consider the matter more closely.
A.
habit
B.
intention
C.
action
D.
practice
【简答题】解释差序格局？
【简答题】秘书、秘书部门在计划的制订和执行过程中,都要遵循 , ( )原则。
【单选题】I. Choose the best answer for each question. 1. In the process of , the suppliers' qualifications and history are analyzed.
A.
selecting the bidders
B.
bidding process
C.
technical evaluation
D.
commercial evaluation
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