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【判断题】
网络广告,是指在国际互联网这种载体上发布的有偿信息传播。 ( )A.
正确
B.
错误
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举一反三
【简答题】求等差数列8,5,2...的第20项
【简答题】求等差数列8,5,2...的第20项
【简答题】Q组合应该放在该区段中所有道岔的岔尖______侧。
【单选题】What is special about the rock climbing competition?
A.
A foreign team takes part in it.
B.
You don't have to pay to watch it.
C.
You don't have to be a sportsman to take part.
D.
The bus trip to the place of the competition is free.
【单选题】用以下几类工作填筑材料时基本工程性质由好到差的正确排列是( )
A.
砂性土——粉性土——黏性土
B.
砂性土——黏性土——粉性土
C.
粉性土——黏性土——砂性土
D.
黏性土——砂性土——粉性土
【简答题】求等差数列数列的2,5,8,...的第20项
【多选题】In addition to C-S-H gel, hardened cement contains ( ).
A.
unreacted clinker
B.
Ca(OH)2
C.
aluminate hydrates
D.
aluminosulphate
【单选题】What is special about the rock climbing competition?
A.
A foreign team takes part in it.
B.
You can watch it without paying.
C.
You don't have to be a sportsman to take part.
D.
The bus trip to the place of the competition is free.
【简答题】求等差数列 8,5,2 , ... 的通项公式和第 20 项.
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