The engine is to a machine ______ the heart is to a man.A.what B.which C.that D.when

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• The engine is to a machine ______ the heart is to a man.A.what B.which C.that D.when
• The engine is to a machine ______ the heart is to a man.A.what B.which C.that D.when
• 英语翻译transmissible force by an infinite length anchorage was estimated as Fmax = 15 kN (see Fig.5).
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