Aluminum pistons have （） coefficient of thermal expansion compared with those of cast iron.

A、higher

B、lower

C、the same

D、none of the above

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更多“Aluminum pistons have （） coefficient of thermal expansion compared with those of cast iron.”相关的问题

第1题

[单选题] Cold clearances between the skirt of an aluminum piston and the cylinder liner is about （）

A、twice as large as with a cast iron piston B、the same size as with a cast iron piston C、half as large as with a cast iron piston D、the same size as the crown of an aluminum piston

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第2题

[单选题] Ring groove inserts are occasionally used on aluminum alloy piston to（）

A、reduce the ring groove wear rate B、seal against crankcase vapors C、lessen the wear on aluminum part of the cylinder D、allow for the greater expansion rate of aluminum

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第3题

[] An advantage of aluminum pistons, when compared to cast iron pistons is （）.

A、A.greater high temperature strength B、B.better heat conductivity C、C.greater weight per cubic inch D、D.increased resistance to wear

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第4题

[单选题] （） pistons have low inertia and high coefficient of thermal expansion.

A、Cast iron B、Cast steel C、Forged steel D、Aluminum

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第5题

[单选题] An aluminum piston has lower inertia and higher coefficient of （） compared to that of cast iron.

A、viscosity B、twisting moments C、inertia D、thermal expansion