Vents are led from the engine to head tank （） from the cooling water.<br>A:for the release of air<br>B:for the release of water<br>C:in order to the release of air<br>D:because the release of air

Vents are led from the engine to head tank （） from the cooling water.
A:for the release of air
B:for the release of water
C:in order to the release of air
D:because the release of air

出自：海船船员证

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