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【多选题】
PVC 热稳定剂的作用可归纳为( )A.
吸收氯化氢
B.
消除不稳定氯原子
C.
捕获自由基
D.
与共轭双键进行双烯加成
E.
吸收紫外线
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举一反三
【单选题】What is concessive clause?
A.
The concessive clause, a type of subordinate clause, contrasts with the main clause.
B.
The concessive clause is the sentence which must be introduced by “ although ” , “ though ” , or “ while ” .
C.
The concessive clause is a sentence with an emphatic “ do ” .
D.
The concessive clause is a type of main clause.
【简答题】What do you know about adverbial clause?
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【单选题】What is an exclusion clause?
A.
It is a clause excluding the rights of persons other than the contracting parties to sue for breach of contract
B.
It is a clause which limits the contractual capacity of one of the parties
C.
It is a contractual clause which limits liability for breach of contract
【简答题】What is the more or less clause?
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