工芸基礎知識（選択問題）20181105
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冷凍装置のリザーバー内の液面は、正常に動作している間は適切なレベルを保つことが望ましい。 A．1/2～2/3 B．80％前後 C．1/3～1/2 D．見えればよい
C．1/3～1/2#こちらで迅速に返信#
C．1/3～1/2#こちらで迅速に返信#
Cを選んで、3分の1から2分の1
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