单选题Approximately what percent of tank space should be left for expansion of oil due to possible temperature increase?（）A1% to 3%B1% to 2%C4%D2% to 4%
单选题
Approximately what percent of tank space should be left for expansion of oil due to possible temperature increase?（）
A
1% to 3%
B
1% to 2%
C
4%
D
2% to 4%
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