单选题The cooling water is in direct contact with the outer surface of the liner as a result of which it is termed a （）.Awater linerBwet linerCdry linerDdrown liner
单选题
The cooling water is in direct contact with the outer surface of the liner as a result of which it is termed a （）.
A
water liner
B
wet liner
C
dry liner
D
drown liner
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