皮皮学，免费搜题
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【单选题】
AA.
、电子商务安全的（）指确保通信双方的合法性。
B.
保密性
C.
完整性
D.
认证性
E.
可访问性
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【简答题】HTTP服务默认端口号是(___________),FTP服务默认端口(___________)。
【单选题】Psychologists take opposing views of how external rewards, from warm praise to cold cash, affect motivation and creativity. Behaviorists, who study the relation between actions and their consequences,...
A.
the choice between spiritual encouragement and monetary rewards
B.
the amount of monetary rewards for students' creativity
C.
the study of relationship between actions and their consequences
D.
the effects of external rewards on students' performance
【简答题】FTP服务的默认端口号是____,Web服务的默认端口号是____。
【单选题】—Where would you like to visit? —I'd like to visit . I don't like noisy cities.
A.
somewhere warm
B.
warm everywhere
C.
anywhere cool
D.
somewhere quiet
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