单选题An advantage of aluminum pistons, when compared to cast iron pistons is （）.Agreater high temperature strengthBbetter heat conductivityCgreater weight per cubic inchDincreased resistance to wear
单选题
An advantage of aluminum pistons, when compared to cast iron pistons is （）.
A
greater high temperature strength
B
better heat conductivity
C
greater weight per cubic inch
D
increased resistance to wear
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