工芸基礎知識（選択問題）20171230
Thread Content
往復ポンプの理論流量に影響を与える要因には、次のものがあります。 A. ポンプの排出圧力 B. ポンプの作動回数 C. ポンプの強度 D. ポンプの内部漏れ量
B（理論流量は内部漏れを含まない~~~）
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