单选题Gasoline tanks should be filled（）.Ato the top to expel all vapors from the tanksBto the top so the operator is certain how much fuel he has aboardCwith only sufficient fuel for the planned trip so excess gasoline is not carriedDto near the top with some space allowed for gasoline expansion
单选题
Gasoline tanks should be filled（）.
A
to the top to expel all vapors from the tanks
B
to the top so the operator is certain how much fuel he has aboard
C
with only sufficient fuel for the planned trip so excess gasoline is not carried
D
to near the top with some space allowed for gasoline expansion
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