Cylinder linings constructed as an integral part of the block, are characterized by which of the following disadvantages?（）<br>A:They conduct heat poorly<br>B:They are expensive<br>C:They cannot be replaced<br>D:They require special tools for removal

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

出自：海船船员证

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