工芸基礎知識（選択問題）2018030
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電動往復ポンプの排出弁を絞っても、何も起こりません。 A. 排出圧力の上昇 B. モーターの過負荷 C. 流量の著しい減少 D. 安全弁の開放 ヒント：往復ポンプは容積効率が高く、流量は排出圧力の影響をあまり受けない。
電動往復ポンプの排出口バルブを絞っても、Cは発生しません。 A. 排出圧力の上昇 B. モーターの過負荷 C. 流量の著しい減少 D. 安全弁の開放
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