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SET通过使用公共密钥方式加密保证了数据的保密性,通过使用对称密钥加密来确定数据是否被篡改,保证数据的一致性和完整性,并可以完成交易的防抵赖。
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举一反三
【单选题】I worked very hard for a year in this company ___ I am looking for a promotion.
A.
but
B.
so
C.
although
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【单选题】What is the cause of her death?
A.
Joy because her husband died.
B.
D espair because her joy was killed.
C.
joy because her husband came back.
D.
S adness over her husband ’ s death.
查看完整题目与答案
【单选题】I am looking for a gift for my mother.
A.
我在寻找妈妈。
B.
我在给妈妈寻找一个礼物。
C.
妈妈给了我一份礼物。
查看完整题目与答案
【单选题】慢性阻塞性肺疾病患者加强腹式呼吸的原因是
A.
有利于痰液排出
B.
增加肺泡张力
C.
使呼吸阻力减低，增加肺泡通气量
D.
D 借助腹肌进行呼吸
查看完整题目与答案
【简答题】The little girl was ________ by the death of her dog since her affection for the pet had been real and deep. A) grieved B) suppressed C) oppressed D) sustained
查看完整题目与答案
【单选题】关于 PPP 协议下列说法正确的是 ( ) 。
A.
PPP 协议是物理层协议
B.
PPP 协议是在 HDLC 协议的基础上发展起来的
C.
PPP 协议支持的物理层可以是同步或异步电路
D.
PPP 主要由两类协议组成：链路控制协议簇 (LCP) 和网络安全方面的验证协议簇 (PAP 和 CHAP)
查看完整题目与答案
【单选题】关于PPP协议下列说法正确的是()
A.
PPP协议是物理层协议
B.
PPP协议是在HDLC协议的基础上发展起来的
C.
PPP协议支持的物理层可以是同步电路或异步电路。
D.
PPP主要由两类协议组成：链路控制协议族（LCP）和网络安全方面的验证协议族（PAP和CHAP）
查看完整题目与答案
【单选题】Good morning. I am looking for a tie for my blue shirt.
A.
Have a nice day.
B.
I think you need a dark blue tie. How about this one?
C.
Yes, we have plenty of shirts here.
D.
Here is your change.
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【单选题】______ her death in 1886, the poet had become a legend in her hometown.
A.
It was before
B.
Before long
C.
When long before
D.
Long before
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【简答题】I am looking for a .
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相关题目：
【单选题】I worked very hard for a year in this company ___ I am looking for a promotion.
A.
but
B.
so
C.
although
查看完整题目与答案
【单选题】What is the cause of her death?
A.
Joy because her husband died.
B.
D espair because her joy was killed.
C.
joy because her husband came back.
D.
S adness over her husband ’ s death.
查看完整题目与答案
【单选题】I am looking for a gift for my mother.
A.
我在寻找妈妈。
B.
我在给妈妈寻找一个礼物。
C.
妈妈给了我一份礼物。
查看完整题目与答案
【单选题】慢性阻塞性肺疾病患者加强腹式呼吸的原因是
A.
有利于痰液排出
B.
增加肺泡张力
C.
使呼吸阻力减低，增加肺泡通气量
D.
D 借助腹肌进行呼吸
查看完整题目与答案
【简答题】The little girl was ________ by the death of her dog since her affection for the pet had been real and deep. A) grieved B) suppressed C) oppressed D) sustained
查看完整题目与答案
【单选题】关于 PPP 协议下列说法正确的是 ( ) 。
A.
PPP 协议是物理层协议
B.
PPP 协议是在 HDLC 协议的基础上发展起来的
C.
PPP 协议支持的物理层可以是同步或异步电路
D.
PPP 主要由两类协议组成：链路控制协议簇 (LCP) 和网络安全方面的验证协议簇 (PAP 和 CHAP)
查看完整题目与答案
【单选题】关于PPP协议下列说法正确的是()
A.
PPP协议是物理层协议
B.
PPP协议是在HDLC协议的基础上发展起来的
C.
PPP协议支持的物理层可以是同步电路或异步电路。
D.
PPP主要由两类协议组成：链路控制协议族（LCP）和网络安全方面的验证协议族（PAP和CHAP）
查看完整题目与答案
【单选题】Good morning. I am looking for a tie for my blue shirt.
A.
Have a nice day.
B.
I think you need a dark blue tie. How about this one?
C.
Yes, we have plenty of shirts here.
D.
Here is your change.
查看完整题目与答案
【单选题】______ her death in 1886, the poet had become a legend in her hometown.
A.
It was before
B.
Before long
C.
When long before
D.
Long before
查看完整题目与答案
【简答题】I am looking for a .
查看完整题目与答案
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