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【单选题】
The network layer provides services to the transport layer．It call be based on either virtual circuits or datagrams．In both cases，its main job is（ ）packets from the source to the destination．A.
dealing with
B.
sending
C.
routing
D.
receiving
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【简答题】在电子商务条件下，买方应承担按照合同规定的_______、_______和_______接受标的物的义务。
【单选题】急性呼吸窘迫综合征最重要的诊断依据是( )
A.
呼吸频率增加，每分钟＞28 次/分
B.
肺泡-动脉氧分压差降低
C.
氧合指数 ≤ 300mmHg
D.
肺内分流量减少
E.
血气分析提示低氧血症伴轻度二氧化碳潴留
【单选题】在电子商务条件下，卖方应该承担的义务不包括：()
A.
按照合同的规定提交标的物及单据
B.
对标的物的权利承担担保义务
C.
对标的物的质量承担担保义务
D.
对标的物的价格承担优惠义务
【单选题】—Do you know sound travels very fast? 一Yes. But light travels _________ sound.
A.
much faster than
B.
a little faster than
C.
as fast as
D.
slower than
【单选题】体育课为必修课,全体学生都应修读。因患有某种疾病或者生理缺陷而不能参加体育课修读的学生,应在学期开学后( )天内持指定医院诊断证明,经开课学院审核同意报教务处备案后,可改修体育保健课。
A.
5
B.
7
C.
14
【简答题】法律关系是以_________(4个字)为内容的社会关系
【单选题】A) He spent three months writing “Travels with Charley”. B) He enjoyed his travels around the United States. C) He was fond of writing about his travels. D) He didn't enjoy the trip as much as Charley...
A.
He spent three months writing “Travels with Charley”.
B.
He enjoyed his travels around the United States.
C.
He was fond of writing about his travels.
D.
He didn't enjoy the trip as much as Charley.
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