Based on communication channels，belong to non-verbal communication（）
A. body language
B. facial expressions
C. gestures
D. eye contact
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Noise is a term used for factors that interfere with the exchange of messages, including. Noise is inevitable（）
A. external noise
B. physiological noise
C. psychological noise
D. semantic noise
The stages of Culture shock include and Acceptance（）
A. Honeymoon
B. Disintegration
C. Reintegration
D. Becoming Functional
因为提出关系模型而获得图灵奖的是（）
A. Charles W.Bachman
B. E.F.Codd
C. Jim Gray
D. Michael Stonebraker
Properties of Negotiable Instruments include（）
A. Right setting
B. Requisite in form
C. Words restriction
D. All of the other
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