In a （） boiler the hot gases from the furnace pass through the tubes while the water is on the outside.<br>A:water-tube<br>B:fire-tube<br>C:exhaust gas<br>D:None of the above is true

In a （） boiler the hot gases from the furnace pass through the tubes while the water is on the outside.
A:water-tube
B:fire-tube
C:exhaust gas
D:None of the above is true

出自：海船船员证

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