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【单选题】
根据信道噪声干扰的性质,差错不包含( )。A.
随机错误
B.
突发错误
C.
干扰错误
D.
混合错误
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皮皮学刷刷变学霸
举一反三
【单选题】1952年教育部颁发实行的《幼儿园暂行教学纲要(草案)》规定的幼儿园教养活动项目有体育、计算,图画手工、音乐、语言和( )
A.
常识
B.
品德
C.
认识环境
D.
社会
【单选题】(练习12-2) What does the seller need to guarantee?
A.
Payment will be made as soon as an agreement is signed．
B.
Payment will be made when the contract is concluded．
C.
Payment will be made the moment goods are supplied．
D.
Payment will be made until a Letter of Credit is ordered．
【单选题】The City mouse asked the Country mouse to visit his home.
A.
Right.
B.
Wrong.
C.
Doesn't say.
【简答题】Once there were two mice. They were friends. One mouse lived in the country; the other mouse lived in the city. After many years the Country mouse saw the City mouse; he said, 'Do come and see me at m...
【多选题】关于物理性污染特点的说法中正确的包括
A.
物理性污染是无形污染
B.
物理性污染指标具有超限性
C.
物理性污染具有危害的长期遗留性
D.
物理性污染具有局部性
E.
物理性污染具有时效性
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