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【单选题】
下面关于网络信息安全措施的叙述中,正确的是________。A.
带有数字签名的信息是未泄密的
B.
防火墙可以防止外界接触到内部网络，从而保证内部网络的绝对安全
C.
使用最好的杀毒软件可以杀掉所有的病毒数据
D.
加密的目的是在网络通信被窃听的情况下仍然保证数据的安全
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】How often does the man eat out?
A.
Nearly every two days
B.
Almost every day
C.
Not very often
【单选题】旅游者在办理离境手续时，一般是( )。
A.
先办理登机手续，再过边检、海关
B.
先过边检，再办理登机手续、过海关
C.
先过海关，过边检，再办理登机手续
D.
先办理登机手续，再过海关、边检
【单选题】— How are you today? — Oh, I ____ as ill as I do now for a long time. [ ]
A.
isn't feeling
B.
wasn't feeling
C.
don't feel
D.
haven't felt
【简答题】办理登机手续;登记办理住宿手续
【单选题】How often does the magazine publish?
A.
A week.
B.
Two weeks.
C.
A month.
D.
A quarter.
【单选题】How often does the man read the company magazine?
A.
Every week
B.
Almost never
C.
Every month
D.
Each quarter
【判断题】A fall in the expected future exchange rate shifts the expected return schedule for domestic deposits to the right and causes the domestic currency to depreciate.
A.
正确
B.
错误
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