When the water produced from most evaporator is supplied for drinking purpose, it must be treated to ensure it is biologically pure and （）.<br>A:slightly acidic<br>B:slightly alkaline<br>C:no salty<br>D:slightly bitter

When the water produced from most evaporator is supplied for drinking purpose, it must be treated to ensure it is biologically pure and （）.
A:slightly acidic
B:slightly alkaline
C:no salty
D:slightly bitter

出自：海船船员证

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