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毎日1問、正解者には6つの財富が報酬として与えられ、参加者には2つの財富が与えられます;7月28日

2016-07-28View Original

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単一選択問題:PVCの懸濁重合における分散剤の使用過程で、アルコール分解度が50%未満の分散剤溶液は粘度が高いため、分散剤を供給するポンプは( )でなければならない。 A.遠心ポンプ B.歯車ポンプ C.ダイヤフラムポンプ D.遠心ポンプと歯車ポンプのどちらでもよい; 答え:B.ギアポンプ
Reply #22016-07-28
Bギアポンプは粘性の高い物質の送液に適しています。

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