单选题Cylinder linings constructed as an integral part of the block, are characterized by which of the following disadvantages?（）AThey conduct heat poorlyBThey are expensiveCThey cannot be replacedDThey require special tools for removal
单选题
Cylinder linings constructed as an integral part of the block, are characterized by which of the following disadvantages?（）
A
They conduct heat poorly
B
They are expensive
C
They cannot be replaced
D
They require special tools for removal
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