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消息认证是 ,即验证数据在传送和存储过程中是否被篡改、重放或延迟等。
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【单选题】After the construction work was completed in late 1997, a review of movements in nearby walls showed that the building was in better shape than had been thought before and the safety limit was raised ...
A.
observation
B.
description
C.
discussion
D.
re-examination
【简答题】段落阅读: 1. ... A child’s birthday party doesn’t have to be a hassle ; it can be a basket of fun, according to Amy , a mother of two, ages 4 and 18 months. ... What does the underlined word “hassle” prob...
【单选题】The name"Canada"is thought to be derived from kanata,an Indian word meaning()
A.
a guitar
B.
a meeting place
C.
a settlement
D.
a piece of land
【单选题】The article states: "There was no opposition from the parents," Tatsumi said. "It wasn't that difficult a decision for us. We thought it was a great idea." Which would be the closest synonym for the w...
A.
Choice
B.
Software
C.
Reason
D.
Drill
【单选题】What does the sentence " That living word awakened my soul" mean?
A.
It meant that it gave light, hope and joy to the author.
B.
It meant that it broke down all the barriers before the author, which made learning easy for her.
C.
It means that the author felt a returning thought and she was conscious of the things forgotten
D.
It means that the author realized there existed words, which made her eager to learn and start a new life.
【单选题】3)Which of the following is NOT Nick's implication by saying"to understand the meaning of the splendid word "drizzle"?
A.
He advised people coming to Britain to bring an umbrella.
B.
He realized that British weather is terrible.
C.
He thought learning English well could help foreigners to live in Britain.
D.
He thought it rains often but not always heavily in Britain.
【多选题】下列关于粒料基层施工对各原材料的技术要求的叙述中,正确的有( )。
A.
级配碎石用作基层时,其压实度不应小于98%
B.
级配砾石或天然砂砾用作底基层时,CBR值对中等交通道路不应小于60%
C.
填隙碎石用作底基层时,最大粒径不应超过60mm
D.
填隙碎石的单层铺筑厚度宜为10~12cm
E.
级配砾石或天然砂砾用作基层时,CBR值不应小于40%
【单选题】菜贩刘某将蔬菜装入袋中,放在居民小区路旁长条桌上,写明“每袋20元,请将钱放在铁盒内”。然后,刘某去3公里外的市场卖菜。小区理发店的店员经常好奇地出来看看是否有人偷菜。甲数次公开拿走蔬菜时假装往铁盒里放钱。关于甲的行为定性(不考虑数额),下列哪一选项是正确的?
A.
甲乘人不备,公然拿走刘某所有的蔬菜,构成抢夺罪
B.
蔬菜为经常出来查看的店员占有,甲构成盗窃罪
C.
甲假装放钱而实际未放钱,属诈骗行为,构成诈骗罪
D.
刘某虽距现场3公里,但仍占有蔬菜,甲构成盗窃罪
【单选题】A child's birthday party doesn't have to be a hassle ; instead, it can be a basket of fun, according to Beth Anaclerio, an Evaston mother of two, ages 4 and 18 months. What does the underlined word "h...
A.
a party designed by specialists
B.
a plan requiring careful thought
C.
a situation causing difficulty or trouble
D.
a demand made by guests
【多选题】下列有关级配碎石的原材料选择中,论述正确的是( )。
A.
级配碎石的原材料中包括碎石、石屑、矿粉
B.
应控制碎石的针片状颗粒含量不超过一定值
C.
应控制碎石的最大粒径不超过规范要求
D.
应控制碎石的最小粒径不超过规范要求
E.
应控制碎石的压碎值满足规范要求
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