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【单选题】
中继器工作在OSI开放互连模型的A.
物理层
B.
数据链路层
C.
传输层
D.
网络层
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皮皮学刷刷变学霸
举一反三
【简答题】试析国际贸易中信用证的性质和作用
【单选题】A good way to train an animal to do something quickly is to_____. A make the action easy
B.
praise it in words
C.
reward it with food
D.
weaken its motivation
【单选题】If you have difficulty_______a decision，wearing red_______it easier for you to take action．
A.
make；making
B.
made；making
C.
making；make
D.
making；makes
【单选题】Obviously the only way to make people realize that an action is morally wrong is to punish them if they ________ it.
A.
confirm
B.
create
C.
commit
D.
compensate
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