单选题Cylinder liners from older lower powered engines had a uniform wall thickness and the cooling was achieved by circulating cooling water through a space formed between （）.Acrown and skirtBliner and jacketCring and grooveDjacket and block
单选题
Cylinder liners from older lower powered engines had a uniform wall thickness and the cooling was achieved by circulating cooling water through a space formed between （）.
A
crown and skirt
B
liner and jacket
C
ring and groove
D
jacket and block
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