The water in an auxiliary boiler should be tested for chloride content to determine （）.<br>A:total dissolved solids<br>B:salt contamination<br>C:water hardness<br>D:chlorine contamination

The water in an auxiliary boiler should be tested for chloride content to determine （）.
A:total dissolved solids
B:salt contamination
C:water hardness
D:chlorine contamination

出自：海船船员证

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